How to handle backend events after admin making an order as paid in wix stores( go to Dashboard -> Store Order)

Once the user has placed an order after that user is going to pay by cash and the administrator will go to Dashboard → Store Order then he marks the order as paid.

What are the api events support to handle it? We need an event trigger as soon as admin marks order as paid

https://www.wix.com/corvid/reference/wix-pay-backend.Events.html