How to get I know, that RecurrentPayment was successful? Is there something like a webhook?

[MightyForms]

I'm developing an application that have a paid plan.
As I know, shops owners get invoice in the end of month, and should pay for shop and apps, but what if some user will not pay?
How can I (my server) know about it, and cancel subscription or change plan to Free?

Many services provide Webhook functionality for tracking financial events, but I didn't find nothing similar in Shopify.
Thanks!

[MightyForms · Accepted solution]

Solution is a next: there is a webhook with event "APP_SUBSCRIPTIONS_UPDATE", and after creating webhook I've get data after updating app subscription.