nestjs-guard-grpc/libs/nestjs-guard-grpc/src/decorator/user.grpc.decorator.ts

```sh nest g library nestjs-guard-grpc ```

import { createParamDecorator, ExecutionContext } from '@nestjs/common';
const camelcaseKeys = require('camelcase-keys');

export const GRPCUser = createParamDecorator((data: unknown, context: ExecutionContext) => {
  return camelcaseKeys(context.switchToRpc().getContext().user);
});