title: Facebook API Lead Ad webhook lead retrieval
body: <p>I have setup a webhook for Facebook Lead Ads</p>
  
  <p>It is receiving data like this:</p>
  
  <pre><code>{"object":"page","entry":[{"id":"718196074978224","time":1453818316,"changes":[{"field":"leadgen","value":{"ad_id":"399579767903","adgroup_id":"971076277715","created_time":1453789516,"form_id":"930912320812","leadgen_id":"151977133461","page_id":"718196074978224"}}]}]}
  </code></pre>
  
  <p>The next step is to retrieve the details. </p>
  
  <p>The docs say 
  <a href="https://graph.facebook.com/v2.5/" rel="nofollow">https://graph.facebook.com/v2.5/</a>
  but if I use the leadgen_id (151977133461) this returns
  "singular published story API is deprecated for versions v2.4 and higher"</p>
  
  <p>I've also read that _ might work, but that returns a different error.</p>