add / readNotification working

public/site/config/routes/read-notification.php

@@ -0,0 +1,15 @@
+<?php
+
+return [
+  'pattern' => '(:all)read-notification.json',
+  'method' => 'POST',
+  'action'  => function () {
+      $json = file_get_contents('php://input');
+      $data = json_decode($json);
+      $user = kirby()->user($data->userUuid);
+
+      $newNotifications = $user->readNotification($data->group, $data->notificationId);
+
+      return $newNotifications;
+  }
+];