Subscribing to FB Updates
Step 1
Retrieve App Auth Token graph.facebook.com/oauth/access_token?client_id=465454280146210&client_secret=969ae2be2b8212715f0a5c299f062192&grant_type=client_credentials
Step 2 Check subscriptions curl “graph.facebook.com/<appid>/subscriptions?access_token=465454280146210|cvSkeD8otfLqTCbXI5NT46O5RyA”
Step 3 Subscribe using a post with these params
curl -F ‘object=user’ \ -F ‘callback_url=<callback url you have to implement>’ \ -F ‘fields=checkins’ \ -F ‘verify_token=<secret token>’ \ “graph.facebook.com/465454280146210/subscriptions?access_token=<access token from (1)”