diff --git a/app/library/OAuth/UserData/UserDataInterface.php b/app/library/OAuth/UserData/UserDataInterface.php
index 456b72d..358cafb 100644
--- a/app/library/OAuth/UserData/UserDataInterface.php
+++ b/app/library/OAuth/UserData/UserDataInterface.php
@@ -54,4 +54,9 @@ interface UserDataInterface
      * @return string
      */
     public function getEmail();
+
+    /**
+     * @return array
+     */
+    public function toArray();
 }