public function service()
 {
     $userSubUsersManager = new UserSubUsersManager($this->config, $this->args);
     $subUserId = $userSubUsersManager->secure($_REQUEST["user_id"]);
     $userId = $this->sessionManager->getUser()->getId();
     if ($userSubUsersManager->getByUserIdAndSubUserId($userId, $subUserId)) {
         $userSubUsersManager->removeSubUserFromUser($subUserId, $userId);
         $jsonArr = array('status' => "ok", "message" => "Sub user removed!");
         echo json_encode($jsonArr);
         return true;
     } else {
         $jsonArr = array('status' => "err", "errText" => "System Error: Sub user dosn't exist in your sub users list!");
         echo json_encode($jsonArr);
         return false;
     }
 }