title: Facebook realtime update callback POST
body: <p>Is it possible to make a POST in a wall of a user after a Realtime Update, automatically?</p>
  
  <p><strong>Example</strong>: The user makes a post in his wall, then Facebook fire an event and send the object data to the url we specified in the realtime updates dashboard. After we process the data the callback url makes a notification/post in the user wall.
  Is this possible?<br>I've been watching the documentation but I'm not figuring out how to get the access_token to make the post.</p>
  
  <p>Regards,<br>
  Elkas</p>