Support for Subscribe to Events

[gijo-varghese]

FB SDK a provides a way to subscribe to the events of STM button (https://developers.facebook.com/docs/messenger-platform/discovery/send-to-messenger-plugin/#event). Is it possible?

FB.Event.subscribe('send_to_messenger', function(e) {
    // callback for events triggered by the plugin
  
});

[lemieux]

This seems similar to this one #6.