The correct answer is that I need to add params with type: "string" ID, it actually had value type: "number"

@Crud({
  model: {
      type: User
    }, 
    params: {
      UserID: {
        field: 'UserID',
        type: 'string',
        primary: true
      }
    }
})
@ApiTags('users')
@Controller('users')
export class UserController implements CrudController<User> {
  
  constructor(public service: UserService) {

  }

  get base(): CrudController<User> {
    return this;
  }
}

Original answer found here: https://github.com/nestjsx/crud/issues/240#issuecomment-527350394