diff --git a/backend/libs/database/proxy_user.entity.ts b/backend/libs/database/proxy_user.entity.ts
index d89415a..95f50ab 100644
--- a/backend/libs/database/proxy_user.entity.ts
+++ b/backend/libs/database/proxy_user.entity.ts
@@ -1,4 +1,5 @@
-import { Column, Entity, JoinColumn, OneToOne, PrimaryGeneratedColumn } from 'typeorm';
+import { Column, Entity, JoinColumn, OneToMany, OneToOne, PrimaryGeneratedColumn } from 'typeorm';
+import { Payment } from './payment.entity';
 import { User } from './user.entity';
 
 @Entity()
@@ -10,11 +11,11 @@ export class ProxyUser {
     @PrimaryGeneratedColumn('uuid')
     public uuid!: string;
 
-    @Column({ nullable: true })
-    public userName: string;
+    @Column({ nullable: false, unique: true })
+    public userName!: string;
 
     @Column({ nullable: true })
-    public description: string;
+    public description?: string;
 
     @Column({ nullable: false })
     public link!: string;
@@ -27,5 +28,8 @@ export class ProxyUser {
 
     @OneToOne(() => User, (user) => user.id, { onDelete: 'CASCADE', onUpdate: 'CASCADE', nullable: true })
     @JoinColumn({ name: 'user_id' })
-    public user: User;
+    public user?: User;
+
+    @OneToMany(() => Payment, (payment) => payment.user)
+    public payments: Payment[];
 }
diff --git a/backend/src/app.module.ts b/backend/src/app.module.ts
index 65d3643..1adba1e 100644
--- a/backend/src/app.module.ts
+++ b/backend/src/app.module.ts
@@ -6,10 +6,19 @@ import { AdminModule } from './modules/admin/admin.module';
 import { ImageModule } from './modules/image/image.module';
 import { AppInitService } from './modules/initialization/app.init.service';
 import { PostModule } from './modules/post/post.module';
+import { ProxyModule } from './modules/proxy/proxy.module';
 import { UserModule } from './modules/user/user.module';
 
 @Module({
-    imports: [LibsModule, PostModule, AdminModule, UserModule, ImageModule, TypeOrmModule.forRoot(<TypeOrmModuleOptions>config.database)],
+    imports: [
+        LibsModule,
+        PostModule,
+        AdminModule,
+        UserModule,
+        ImageModule,
+        ProxyModule,
+        TypeOrmModule.forRoot(<TypeOrmModuleOptions>config.database),
+    ],
     controllers: [],
     providers: [AppInitService],
 })
diff --git a/backend/src/modules/proxy/proxy.controller.ts b/backend/src/modules/proxy/proxy.controller.ts
new file mode 100644
index 0000000..87e565e
--- /dev/null
+++ b/backend/src/modules/proxy/proxy.controller.ts
@@ -0,0 +1,46 @@
+import { Body, Controller, Get, Param, Post } from '@nestjs/common';
+import { ApiOperation, ApiTags } from '@nestjs/swagger';
+import { IOperation, IProxyUser } from './proxy.dto';
+import { ProxyService } from './proxy.service';
+
+@ApiTags('Proxy')
+@Controller('proxy')
+export class ProxyController {
+    constructor(private proxyService: ProxyService) {}
+
+    @ApiOperation({ description: 'Method to create a new proxy user' })
+    @Post('newUser')
+    async newUser(@Body() data: IProxyUser) {
+        return await this.proxyService.newUser(data);
+    }
+
+    @ApiOperation({ description: 'get user by its username' })
+    @Get('getUser/:userName')
+    async getUser(@Param('userName') userName: string) {
+        return await this.proxyService.getUser(userName);
+    }
+
+    @ApiOperation({ description: 'get all users of proxy' })
+    @Get('getAllUsers')
+    async getAllUsers() {
+        return await this.proxyService.getAllUsers();
+    }
+
+    @ApiOperation({ description: 'adding an operation to user' })
+    @Post('operation/add')
+    async addOperation(@Body() data: IOperation) {
+        return await this.proxyService.addOperation(data);
+    }
+
+    @ApiOperation({ description: 'get user payments' })
+    @Get('operation/get/:userName')
+    async getOperations(@Param('userName') userName: string) {
+        return this.proxyService.getOperations(userName);
+    }
+
+    @ApiOperation({ description: 'get all payments' })
+    @Get('operation/get-all')
+    async getAllOperations() {
+        return this.proxyService.getAllOperations();
+    }
+}
diff --git a/backend/src/modules/proxy/proxy.dto.ts b/backend/src/modules/proxy/proxy.dto.ts
new file mode 100644
index 0000000..0dbd923
--- /dev/null
+++ b/backend/src/modules/proxy/proxy.dto.ts
@@ -0,0 +1,12 @@
+import { ApiProperty } from '@nestjs/swagger';
+
+export class IProxyUser {
+    @ApiProperty({ description: 'user name of user to identify them', example: 'username' }) readonly userName!: string;
+    @ApiProperty({ description: 'some user description if you want', example: 'Description of user' }) readonly description?: string;
+    @ApiProperty({ description: 'user link to connect to the proxy', example: 'vless://....' }) readonly link!: string;
+    @ApiProperty({ description: 'telegram user id to connect to user entity', example: '187564' }) readonly user_id?: string;
+}
+
+export class IOperation {
+    @ApiProperty({ description: 'user name of user, that made new operation', example: 'username' }) readonly userName!: string;
+}
diff --git a/backend/src/modules/proxy/proxy.module.ts b/backend/src/modules/proxy/proxy.module.ts
new file mode 100644
index 0000000..41835f0
--- /dev/null
+++ b/backend/src/modules/proxy/proxy.module.ts
@@ -0,0 +1,11 @@
+import { Module } from '@nestjs/common';
+import { LibsModule } from 'libs/libs.module';
+import { ProxyController } from './proxy.controller';
+import { ProxyService } from './proxy.service';
+
+@Module({
+    imports: [LibsModule],
+    controllers: [ProxyController],
+    providers: [ProxyService],
+})
+export class ProxyModule {}
diff --git a/backend/src/modules/proxy/proxy.service.ts b/backend/src/modules/proxy/proxy.service.ts
new file mode 100644
index 0000000..932cb36
--- /dev/null
+++ b/backend/src/modules/proxy/proxy.service.ts
@@ -0,0 +1,105 @@
+import { HttpException, HttpStatus, Injectable, Logger } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Payment } from 'libs/database/payment.entity';
+import { ProxyUser } from 'libs/database/proxy_user.entity';
+import { User } from 'libs/database/user.entity';
+import { Repository } from 'typeorm';
+import { IOperation, IProxyUser } from './proxy.dto';
+
+@Injectable()
+export class ProxyService {
+    private readonly logger: Logger = new Logger(ProxyService.name);
+    constructor(
+        @InjectRepository(ProxyUser) private proxyUserRepository: Repository<ProxyUser>,
+        @InjectRepository(Payment) private paymentRepository: Repository<Payment>,
+        @InjectRepository(User) private userRepository: Repository<User>,
+    ) {}
+
+    async newUser(data: IProxyUser) {
+        try {
+            if (
+                (await this.proxyUserRepository.findOne({ where: { userName: data.userName } })) ||
+                (await this.proxyUserRepository.findOne({ where: { user_id: data.user_id } }))
+            )
+                throw new HttpException('User already exists', HttpStatus.FOUND);
+            const proxyUser = new ProxyUser();
+            const user = data.user_id ? await this.userRepository.findOne({ where: { id: data.user_id } }) : null;
+            if (user) proxyUser.user = user;
+            proxyUser.description = data.description;
+            proxyUser.connectDate = new Date();
+            proxyUser.userName = data.userName;
+            proxyUser.link = data.link;
+            return await this.proxyUserRepository.save(proxyUser);
+        } catch (error) {
+            if (error instanceof HttpException) {
+                this.logger.debug(`[proxy.newUser] error: user already created`);
+                throw error;
+            }
+            this.logger.debug(`[proxy.newUser] error: ${JSON.stringify(error)}`);
+            throw new HttpException('Bad data', HttpStatus.BAD_REQUEST);
+        }
+    }
+
+    async getUser(userName: string) {
+        try {
+            const user = await this.proxyUserRepository.findOne({ where: { userName: userName } });
+            if (!user) throw new HttpException('Not found', HttpStatus.NOT_FOUND);
+            return user;
+        } catch (error) {
+            if (error instanceof HttpException) {
+                this.logger.debug(`[proxy.getUser] error: not found`);
+                throw error;
+            }
+            this.logger.debug(`[proxy.getUser] error: ${JSON.stringify(error)}`);
+            throw new HttpException('Bad data', HttpStatus.BAD_REQUEST);
+        }
+    }
+
+    async getAllUsers() {
+        try {
+            return await this.proxyUserRepository.find();
+        } catch (error) {
+            this.logger.debug(`[proxy.getAllUsers] error: ${JSON.stringify(error)}`);
+            throw new HttpException('Bad data', HttpStatus.BAD_REQUEST);
+        }
+    }
+
+    async addOperation(data: IOperation) {
+        try {
+            const user = await this.proxyUserRepository.findOne({ where: { userName: data.userName } });
+            if (!user) throw new HttpException('Not found', HttpStatus.NOT_FOUND);
+            return await this.paymentRepository.save({ payTime: new Date(), user: user });
+        } catch (error) {
+            if (error instanceof HttpException) {
+                this.logger.debug(`[proxy.addOperation] error: not found`);
+                throw error;
+            }
+            this.logger.debug(`[proxy.addOperation] error: ${JSON.stringify(error)}`);
+            throw new HttpException('Bad data', HttpStatus.BAD_REQUEST);
+        }
+    }
+
+    async getOperations(userName: string) {
+        try {
+            const user = await this.proxyUserRepository.findOne({ where: { userName: userName }, relations: { payments: true } });
+            if (!user) throw new HttpException('Not found', HttpStatus.NOT_FOUND);
+            return user.payments;
+        } catch (error) {
+            if (error instanceof HttpException) {
+                this.logger.debug(`[proxy.addOperation] error: not found`);
+                throw error;
+            }
+            this.logger.debug(`[proxy.addOperation] error: ${error}`);
+            throw new HttpException('Bad data', HttpStatus.BAD_REQUEST);
+        }
+    }
+
+    async getAllOperations() {
+        try {
+            return await this.paymentRepository.find();
+        } catch (error) {
+            this.logger.debug(`[proxy.addOperation] error: ${error}`);
+            throw new HttpException('Bad data', HttpStatus.BAD_REQUEST);
+        }
+    }
+}