I'm currently developing a Facebook app, which will subscribe to Pages in order to pick up activity on the "feed" of the page. So any posts and comments will trigger the Webhook. Currently it seems that you can only set 1 Webhook URL per application. What I want is the ability for the user to install the Facebook app against their page and be able to change the Webhook URL to point to their own URL. Is it possible to do this? I thought it would be having read the following from the Facebook developers website (https://developers.facebook.com/docs/graph-api/webhooks#subscriptions-edge),
As it says you can "create new subscriptions or modify existing ones" I was under the assumption that you can add more than 1 Webhook URL. Can anyone help and confirm whether what I'm trying to do is not possible with the current setup from Facebook please?