/**
  * Generate hash
  *
  * @param string  $queueId
  * @param string  $originalUrl
  * @param integer $placeInQueue
  * @param string  $redirectType
  * @param integer $timestamp
  *
  * @return string
  */
 private function generateHash($queueId, $originalUrl, $placeInQueue, $redirectType, $timestamp)
 {
     return hash("sha256", $queueId . $originalUrl . $placeInQueue . $redirectType . $timestamp . KnownUserFactory::getSecretKey());
 }