public function markForeignAccount()
 {
     try {
         $foreign_id = intval(convert::raw2sql($this->request->param('FOREIGN_MEMBER_ID')));
         $current_member = Member::currentUser();
         $this->manager->markAsNotMyAccount($current_member->ID, $foreign_id);
         return $this->ok();
     } catch (NotFoundEntityException $ex1) {
         SS_Log::log($ex1, SS_Log::WARN);
         return $this->notFound($ex1->getMessage());
     } catch (EntityValidationException $ex2) {
         SS_Log::log($ex2, SS_Log::WARN);
         return $this->validationError($ex2->getMessages());
     } catch (Exception $ex) {
         SS_Log::log($ex, SS_Log::ERR);
         return $this->serverError();
     }
 }