Sending only changed data via REST API

I’m picking my brain on how to do this! Please help :grinning:

I got a profile page that extracts GET data from a DB. The user is able to change the fields as they like and can click a save button. Upon saving Appgyver should recognize the fields that are different from the original data and send the new data with A REST API Patch request.

How would I do this? Upon Save event, check every field and only send updated data via the API

Thank youu