Not sure, if it's relevant (or interesting), but the body was just an array of objects. In fact the very same objects that I got from that database, but with an adjustment to order field/column.
For context:
1. I have a repeating div that gets it's data from a supabase table
2. Using the Drag and Drop package I then change the order of the items
3. I update/send back the same data but with adjusted order field