When you have located a webhook subscription , click it and the details will show in a panel (so called "drawer") on the right hand side. The panel will also open after creating a new webhook subscription.

The panel contains two tabs for maintaining a webhook subscription and viewing the notifications:

In the Notifications tab you can view a list with the notifications sent to the selected webhook subscription endpoint.

The list is filled with the following fields:

In the Overview tab you can view details, as well as subscribe or unsubscribe to the selected webhook subscription.