Webhook Subscriptions List and Filters
Open the Webhooks module in the Setup section.
From the list of webhook subscriptions using filters
By using the list of webhook subscriptions that opens from the Webhooks module, you can use filters to find the webhook subscriptions you are looking for.
You can also use the quick filters Subscribed and Unsubscribed to find the webhook subscriptions to which the logged in user is either subscribed or unsubscribed.