We have some news for you 🙂
From now on, the webhooks used to notify your app when it gets installed or uninstalled will be sent to the same endpoint. You can specify the endpoint you want to use in the "Webhooks" section of your app's configuration screen.
To that endpoint we will also send a webhook when a subscription is created, when a subscription changes, and when a subscription is canceled.
You will be able to tell them apart because each webhook will have a specific "event" field.
Your old install and uninstall URLs will be valid until you specify an endpoint in the "Webhooks" section. Once you have specified an endpoint in this section, your old install and uninstall webhooks will no longer work.
Learn more about this here and here.