I can't for the life of me validate the signatures I'm getting from ebay
on the Data deletion messages I'm getting. Has anyone else had this
problem? Has anyone had success doing this via the nodejs sdk?
It looks like I can create a shipping fulfillment through the
fulfillment api's `createShippingFulfillment` endpoint, but is there any
way to void, delete, or edit that shipment once it is created?
