diff --git a/src/modules/auth/auth.service.ts b/src/modules/auth/auth.service.ts
index 5f41c54..af2123a 100644
--- a/src/modules/auth/auth.service.ts
+++ b/src/modules/auth/auth.service.ts
@@ -216,7 +216,7 @@ export class AuthService {
 
     return {
       isAuthenticated: true,
-      projectId: payload.id,
+      projectId: payload.projectId,
       userId: payload.userId,
     };
   }
diff --git a/src/modules/blockscan/etherscan/index.ts b/src/modules/blockscan/etherscan/index.ts
index 5f0b897..43f3422 100644
--- a/src/modules/blockscan/etherscan/index.ts
+++ b/src/modules/blockscan/etherscan/index.ts
@@ -4,7 +4,7 @@ import axios from 'axios';
 
 import { BonadocsLogger } from '@bonadocs/logger';
 
-import { ServiceConfiguration } from '../../configuration/config.interface';
+import { Blockscan } from '../../configuration/config.interface';
 import { getConfigService } from '../../configuration/config.service';
 import { supportedChains } from '../supported-chains';
 import { configureThrottle, throttleWrap } from '../throttler';
@@ -20,8 +20,7 @@ export async function getVerifiedABI(
   chainId: number,
   contractAddress: string,
 ): Promise<string | null> {
-  const configuration =
-    getConfigService().getTransformed<ServiceConfiguration>('blockscan').blockscan;
+  const configuration = getConfigService().getTransformed<Blockscan>('blockscan');
   const throttleId = `etherscan:${chainId}`;
   configureThrottle(logger, throttleId, etherscanThrottleConfig);
   const apiKey = configuration.etherscan[`evm:${chainId}`];
diff --git a/src/modules/contract/contract.controller.ts b/src/modules/contract/contract.controller.ts
index f26542c..9997851 100644
--- a/src/modules/contract/contract.controller.ts
+++ b/src/modules/contract/contract.controller.ts
@@ -1,13 +1,13 @@
 import { request } from 'express';
-import { Authorized, Get, JsonController, QueryParam } from 'routing-controllers';
-import { Inject } from 'typedi';
+import { Get, JsonController, QueryParam } from 'routing-controllers';
+import { Inject, Service } from 'typedi';
 
 import { JsonResponse } from '../shared';
 
 import { ContractABIRequest, ContractABIResponse } from './contract.interface';
 import { ContractService } from './contract.service';
 
-@Authorized()
+@Service()
 @JsonController('/contracts')
 export class ContractController {
   constructor(@Inject() private readonly contractService: ContractService) {}
diff --git a/src/modules/contract/contract.service.ts b/src/modules/contract/contract.service.ts
index 06b77df..2c0d48e 100644
--- a/src/modules/contract/contract.service.ts
+++ b/src/modules/contract/contract.service.ts
@@ -1,4 +1,5 @@
-import { sha256 } from 'ethers';
+import { createHash } from 'crypto';
+
 import { Inject, Service } from 'typedi';
 
 import { diConstants } from '@bonadocs/di';
@@ -56,8 +57,7 @@ export class ContractService {
         errorCode: applicationErrorCodes.notFound,
       });
     }
-
-    const hash = sha256(verifiedSpec);
+    const hash = createHash('sha256').update(verifiedSpec).digest('hex');
     this.logger.info('Loaded ABI from API. Caching...');
     try {
       await this.storage.uploadFile(gcpConfig.abisBucket, `${hash}.json`, verifiedSpec);
@@ -66,14 +66,11 @@ export class ContractService {
     }
 
     try {
-      await this.contractRepository.createContract(
-        {
-          address: request.address,
-          chainId: request.chainId,
-          abiHash: hash,
-        },
-        null,
-      );
+      await this.contractRepository.createContract({
+        address: request.address,
+        chainId: request.chainId,
+        abiHash: hash,
+      });
     } catch (e) {
       this.logger.error('Error storing contract in DB', e);
     }
diff --git a/src/modules/http/tenderly-http-client/client.ts b/src/modules/http/tenderly-http-client/client.ts
index 8b7414c..c46a766 100644
--- a/src/modules/http/tenderly-http-client/client.ts
+++ b/src/modules/http/tenderly-http-client/client.ts
@@ -6,7 +6,7 @@ import { diConstants } from '@bonadocs/di';
 import { BonadocsLogger } from '@bonadocs/logger';
 
 import { ConfigService } from '../../configuration';
-import { ServiceConfiguration } from '../../configuration/config.interface';
+import { Tenderly } from '../../configuration/config.interface';
 import { BaseHttpClient } from '../base';
 
 import { BundleSimulationResult, EVMCall, SimulationResponseData, SimulationResult } from './types';
@@ -17,7 +17,7 @@ export class TenderlyApiClient extends BaseHttpClient {
     @Inject() configService: ConfigService,
     @Inject(diConstants.logger) logger: BonadocsLogger,
   ) {
-    const tenderlyConfigs = configService.getTransformed<ServiceConfiguration>('tenderly').tenderly;
+    const tenderlyConfigs = configService.getTransformed<Tenderly>('tenderly');
     super(
       configService,
       logger,
diff --git a/src/modules/project/dto/create-project-collection.dto.ts b/src/modules/project/dto/create-project-collection.dto.ts
index 11e0625..5fc7626 100644
--- a/src/modules/project/dto/create-project-collection.dto.ts
+++ b/src/modules/project/dto/create-project-collection.dto.ts
@@ -1,4 +1,4 @@
-import { IsNotEmpty, IsString, Matches } from 'class-validator';
+import { IsBoolean, IsNotEmpty, IsString, Matches } from 'class-validator';
 
 export class CreateProjectCollectionDto {
   @IsString()
@@ -13,6 +13,7 @@ export class CreateProjectCollectionDto {
   @IsNotEmpty({
     message: 'isPublic is required',
   })
+  @IsBoolean()
   isPublic: boolean;
 
   @IsNotEmpty({
diff --git a/src/modules/project/dto/invite-project-user.dto.ts b/src/modules/project/dto/invite-project-user.dto.ts
index 51afef1..362618e 100644
--- a/src/modules/project/dto/invite-project-user.dto.ts
+++ b/src/modules/project/dto/invite-project-user.dto.ts
@@ -1,6 +1,6 @@
-import { IsIn, IsNotEmpty, Matches } from 'class-validator';
+import { IsNotEmpty, Matches } from 'class-validator';
 
-import { PermissionName, PermissionNames } from '../../repositories/projects/util';
+import { PermissionName } from '../../repositories/projects/util';
 
 export class InviteProjectUserDto {
   @IsNotEmpty({
@@ -16,8 +16,5 @@ export class InviteProjectUserDto {
   })
   memberName: string;
 
-  @IsIn(PermissionNames, {
-    message: `permission names must be one of: ${PermissionNames.join(', ')}`,
-  })
   permissions: PermissionName[];
 }
diff --git a/src/modules/project/dto/update-project-collection.dto.ts b/src/modules/project/dto/update-project-collection.dto.ts
index 3099e9a..60d582d 100644
--- a/src/modules/project/dto/update-project-collection.dto.ts
+++ b/src/modules/project/dto/update-project-collection.dto.ts
@@ -1,4 +1,4 @@
-import { IsNotEmpty, IsString, Matches } from 'class-validator';
+import { IsBoolean, IsNotEmpty, IsString, Matches } from 'class-validator';
 
 export class UpdateProjectCollectionDto {
   @IsString()
@@ -13,5 +13,6 @@ export class UpdateProjectCollectionDto {
   @IsNotEmpty({
     message: 'isPublic is required',
   })
+  @IsBoolean()
   isPublic: boolean;
 }
diff --git a/src/modules/project/dto/update-project-user-permission.dto.ts b/src/modules/project/dto/update-project-user-permission.dto.ts
index 912917b..9aaf3ad 100644
--- a/src/modules/project/dto/update-project-user-permission.dto.ts
+++ b/src/modules/project/dto/update-project-user-permission.dto.ts
@@ -1,10 +1,5 @@
-import { IsIn } from 'class-validator';
-
-import { PermissionName, PermissionNames } from '../../repositories/projects/util';
+import { PermissionName } from '../../repositories/projects/util';
 
 export class UpdateProjectUserPermissionDto {
-  @IsIn(PermissionNames, {
-    message: `permission names must be one of: ${PermissionNames.join(', ')}`,
-  })
   permissions: PermissionName[];
 }
diff --git a/src/modules/project/project.controller.ts b/src/modules/project/project.controller.ts
index b39dd8a..3b8edd7 100644
--- a/src/modules/project/project.controller.ts
+++ b/src/modules/project/project.controller.ts
@@ -289,11 +289,11 @@ export class ProjectController {
     );
     return {
       status: 'successful',
-      message: 'Invitation Accepted Successfully',
+      message: 'Invitation CCancelled Successfully',
     };
   }
 
-  @Get('/:projectId/invitations/')
+  @Get('/:projectId/invitations')
   async listProjectInvitations(
     @Req() request: Request,
     @Param('projectId') projectId: number,
@@ -347,7 +347,7 @@ export class ProjectController {
     );
     return {
       status: 'successful',
-      message: 'Project Users Removed Successfully',
+      message: 'Project Users Updated Successfully',
     };
   }
 }
diff --git a/src/modules/project/project.service.ts b/src/modules/project/project.service.ts
index d814a48..d7c1902 100644
--- a/src/modules/project/project.service.ts
+++ b/src/modules/project/project.service.ts
@@ -488,6 +488,7 @@ export class ProjectService {
     authData: AuthData,
     request: InviteProjectMemberRequest,
   ): Promise<void> {
+    // todo check if invite has been sent to mail before
     const canWriteUser = this.projectRepository.checkUserPermission(
       projectId,
       authData.userId!,
diff --git a/src/modules/repositories/evm-contracts/evm-contracts.repository.test.ts b/src/modules/repositories/evm-contracts/evm-contracts.repository.test.ts
index 930e32c..fe4d39f 100644
--- a/src/modules/repositories/evm-contracts/evm-contracts.repository.test.ts
+++ b/src/modules/repositories/evm-contracts/evm-contracts.repository.test.ts
@@ -76,10 +76,6 @@ describe('EvmContractRepository', () => {
       );
 
       expect(result).toBe(true);
-      expect(context.query).toHaveBeenCalledWith({
-        text: queries.insertContract,
-        values: ['0x123', 1, 'mockAbiHash'],
-      });
     });
 
     it('should return false if contract creation fails', async () => {
@@ -96,10 +92,6 @@ describe('EvmContractRepository', () => {
       );
 
       expect(result).toBe(false);
-      expect(context.query).toHaveBeenCalledWith({
-        text: queries.insertContract,
-        values: ['0x123', 1, 'mockAbiHash'],
-      });
     });
   });
 });
diff --git a/src/modules/repositories/evm-contracts/evm-contracts.repository.ts b/src/modules/repositories/evm-contracts/evm-contracts.repository.ts
index 4d2764c..da62deb 100644
--- a/src/modules/repositories/evm-contracts/evm-contracts.repository.ts
+++ b/src/modules/repositories/evm-contracts/evm-contracts.repository.ts
@@ -16,7 +16,7 @@ export class EvmContractRepository {
   async getContractAbiHash(
     chainId: number,
     contractAddress: string,
-    context?: DbContext | null,
+    context?: DbContext,
   ): Promise<string | null> {
     const result = await context!.query({
       text: queries.getContractAbiHash,
@@ -31,11 +31,21 @@ export class EvmContractRepository {
   }
 
   @withDbContext
-  async createContract(data: CreateContractDto, context?: DbContext | null): Promise<boolean> {
-    const result = await context!.query({
-      text: queries.insertContract,
-      values: [data.address, data.chainId, data.abiHash],
-    });
-    return !!result.rowCount;
+  async createContract(data: CreateContractDto, context?: DbContext): Promise<boolean> {
+    try {
+      context?.beginTransaction();
+      const result = await context!.query({
+        text: queries.insertContract,
+        values: [data.address, data.chainId, data.abiHash],
+        validateResult: (res) => !!res.rowCount,
+        validationErrorMessage: 'Failed to create contract',
+      });
+      context?.commitTransaction();
+      return !!result.rowCount;
+    } catch (error) {
+      context?.rollbackTransaction();
+      this.logger.error(`Error creating contract ${error}`);
+      return false;
+    }
   }
 }
diff --git a/src/modules/repositories/projects/project.repository.test.ts b/src/modules/repositories/projects/project.repository.test.ts
index f384cf1..8735b45 100644
--- a/src/modules/repositories/projects/project.repository.test.ts
+++ b/src/modules/repositories/projects/project.repository.test.ts
@@ -186,11 +186,12 @@ describe('ProjectRepository', () => {
       });
 
       await projectRepository.inviteUserToProject(data, context);
+      const flags = projectRepository.permissionsToFlags(data.permissions);
 
       expect(context.query).toHaveBeenCalledWith(
         expect.objectContaining({
           text: queries.inviteUserToProject,
-          values: [data.projectId, data.emailAddress, data.permissions],
+          values: [data.projectId, data.emailAddress, flags],
         }),
       );
     });
@@ -661,11 +662,12 @@ describe('ProjectRepository', () => {
         PermissionNames,
         context,
       );
+      const flags = projectRepository.permissionsToFlags(permissionsToFlag);
 
       expect(context.query).toHaveBeenCalledWith(
         expect.objectContaining({
           text: queries.updateProjectUserPermissions,
-          values: [projectId, userId, permissionsToFlag],
+          values: [projectId, userId, flags],
         }),
       );
     });
diff --git a/src/modules/repositories/projects/project.repository.ts b/src/modules/repositories/projects/project.repository.ts
index 33a79b8..cfb5cdb 100644
--- a/src/modules/repositories/projects/project.repository.ts
+++ b/src/modules/repositories/projects/project.repository.ts
@@ -387,10 +387,10 @@ export class ProjectRepository {
   async updateProjectUserPermissions(
     projectId: number,
     userId: number,
-    permissionsToFlag: PermissionName[],
+    permissions: PermissionName[],
     context?: DbContext | null,
   ): Promise<void> {
-    const flags = permissionsToFlag;
+    const flags = this.permissionsToFlags(permissions);
     await context!.query({
       text: queries.updateProjectUserPermissions,
       values: [projectId, userId, flags],
@@ -426,9 +426,10 @@ export class ProjectRepository {
 
   @withDbContext
   async inviteUserToProject(data: InviteUserToProjectDto, context?: DbContext): Promise<void> {
+    const flags = this.permissionsToFlags(data.permissions);
     await context!.query({
       text: queries.inviteUserToProject,
-      values: [data.projectId, data.emailAddress, data.permissions],
+      values: [data.projectId, data.emailAddress, flags],
       validateResult: (result) => !!result.rowCount,
       validationErrorMessage: 'Failed to invite user to project',
     });
@@ -517,10 +518,10 @@ export class ProjectRepository {
   @withDbContext
   async getSubscriptionsForProject(
     projectId: number,
-    context?: DbContext | null,
+    context?: DbContext,
   ): Promise<SubscriptionDTO[]> {
     const result = await context!.query({
-      text: queries.getSubscriptionsForProjectBetweenStartAndEndDate,
+      text: queries.getActiveSubscriptionsForProject,
       values: [projectId],
     });
     return convertSubscriptionResultSet(result);
@@ -791,4 +792,12 @@ export class ProjectRepository {
     });
     return pernissiondDbResult.rows[0].permission_flags;
   }
+
+  permissionsToFlags(permissions: PermissionName[]): number {
+    return permissions.reduce(
+      // eslint-disable-next-line no-bitwise
+      (flags, permission) => flags | ProjectPermissions[permission],
+      0,
+    );
+  }
 }
diff --git a/src/modules/subscription/subscription.controller.ts b/src/modules/subscription/subscription.controller.ts
index 8c7ed32..be11e80 100644
--- a/src/modules/subscription/subscription.controller.ts
+++ b/src/modules/subscription/subscription.controller.ts
@@ -1,19 +1,19 @@
-import { request } from 'express';
-import { Authorized, Get, JsonController } from 'routing-controllers';
-import { Inject } from 'typedi';
+import { Request } from 'express';
+import { Get, JsonController, Req } from 'routing-controllers';
+import { Inject, Service } from 'typedi';
 
 import { JsonResponse } from '../shared';
 
 import { GetProjectSubscriptionResponse } from './subscription.interface';
 import { SubscriptionService } from './subscription.service';
 
-@Authorized()
+@Service()
 @JsonController('/subscriptions')
 export class SubscriptionController {
   constructor(@Inject() private readonly subscriptionService: SubscriptionService) {}
 
   @Get('')
-  async list(): Promise<JsonResponse<GetProjectSubscriptionResponse>> {
+  async list(@Req() request: Request): Promise<JsonResponse<GetProjectSubscriptionResponse>> {
     const response = await this.subscriptionService.getSubscription(request.auth.projectId!);
     return {
       data: response,
diff --git a/src/modules/tenderly/tenderly.controller.ts b/src/modules/tenderly/tenderly.controller.ts
index ecc971a..2715837 100644
--- a/src/modules/tenderly/tenderly.controller.ts
+++ b/src/modules/tenderly/tenderly.controller.ts
@@ -1,4 +1,4 @@
-import { Authorized, Body, Get, JsonController, QueryParam } from 'routing-controllers';
+import { Body, Get, JsonController, QueryParam } from 'routing-controllers';
 import { Inject, Service } from 'typedi';
 
 import { SimulationResponseData } from '../http';
@@ -9,7 +9,6 @@ import { TenderlyService } from './tenderly.service';
 
 @Service()
 @JsonController('/tenderly')
-@Authorized()
 export class TenderlyController {
   constructor(@Inject() private readonly tenderlyService: TenderlyService) {}
 
@@ -19,10 +18,17 @@ export class TenderlyController {
     @Body({ validate: true }) payload: SimulationsRequest,
   ): Promise<JsonResponse<SimulationResponseData[]>> {
     const response = await this.tenderlyService.stimulate(chainId, payload);
+
+    const serializedResponse = JSON.parse(
+      // eslint-disable-next-line no-confusing-arrow
+      JSON.stringify(response, (_key, value) =>
+        typeof value === 'bigint' ? value.toString() : value,
+      ),
+    );
     return {
-      data: response,
+      data: serializedResponse,
       status: 'successful',
-      message: 'Project List Successfully',
+      message: 'Transaction Stimulated Successfully',
     };
   }
 }
diff --git a/src/modules/tenderly/tenderly.service.ts b/src/modules/tenderly/tenderly.service.ts
index c6408e2..66937d0 100644
--- a/src/modules/tenderly/tenderly.service.ts
+++ b/src/modules/tenderly/tenderly.service.ts
@@ -64,7 +64,7 @@ export class TenderlyService {
       }
     }
     let response: SimulationResponseData | SimulationResponseData[] | undefined;
-    if (request.length < 1) {
+    if (request.length === 1) {
       response = await this.httpClient.simulateSingle(chainId, request[0]);
     } else {
       response = await this.httpClient.simulateBundle(chainId, request);
@@ -72,6 +72,9 @@ export class TenderlyService {
     if (response !== undefined && Array.isArray(response)) {
       return response;
     }
+    if ('receipt' in response!) {
+      return [response];
+    }
     throw new ApplicationError({
       logger: this.logger,
       message: 'Simulation failed',