private function changePrivacy($data, $processData) { $userId = (int) $data['userId']; $privacyList = $data['privacy']; foreach ($privacyList as $privacy => $activityKeys) { foreach ($activityKeys as &$key) { $key = $userId . ':' . $key; } $this->service->setActivityPrivacyByKeyList($activityKeys, $privacy); } return true; }