Head over to developer.facebook.com and create an App
On your server, create a facebook webhook that will handle facebook calls. Then create a "leadgen" webhook on you App: https://developers.facebook.com/docs/graph-api/webhooks/v2.5
Head over to developer.facebook.com and create an App
On your server, create a facebook webhook that will handle facebook calls. Then create a "leadgen" webhook on you App: https://developers.facebook.com/docs/graph-api/webhooks/v2.5