private function createSignup($auditionID, $userID)
 {
     $user = User::find($userID);
     if ($user) {
         $auditionStatus = new AuditionStatus();
         $auditionStatus->user_id = $user->id;
         $auditionStatus->audition_id = $auditionID;
         $auditionStatus->stage = 0;
         $auditionStatus->status = 1;
         $auditionStatus->save();
         return true;
     }
 }