protected static function associateLocalUser($uuid)
 {
     $user = DB::collection('user');
     $exist = $user->where('uuid', $uuid)->first();
     if ($exist) {
         return $exist['_id'];
     }
     $avatarUrl = MultiplexController::getAvatarUrl();
     $insertData = ['uuid' => $uuid, 'avatar_url' => $avatarUrl, 'created_at' => date('Y-m-d H:i:s'), 'updated_at' => date('Y-m-d H:i:s')];
     // todo
     // $insertId = $user->
     var_dump($user);
     exit;
 }