public function __construct(array $nested_params, array $external_params)
 {
     parent::__construct($nested_params, $external_params);
     $this->manager = \Radio::getInstance();
     if (!empty($this->nested_params['users.id'])) {
         $user_id = $this->nested_params['users.id'];
         $user = \Stb::getById($user_id);
         if (empty($user)) {
             throw new RESTNotFound("User not found");
         }
         $this->user_id = $user['id'];
     }
 }