While migrating to EventSub with 2.2 million webhooks, I noticed one thing that makes debugging with many webhooks especially difficult.

Problem:

EventSub subscriptions cannot be listed by a condition or type. This makes it impossible to find unwanted duplicates and its ID on the part of Twitch.

Solution:

By filtering by condition and/or type, you can find EventSub subscriptions and their IDs faster and more efficiently.

In addition, we would theoretically not need a database that knows all IDs to manage event subscriptions.