I want to use the HTTP PATCH method to add possibility of partial uploads to my REST interface. I found the JSON Patch Format and the XML Patch Operation Framework which are used to update (and extend) existing JSON and XML resources via PATCH method partially. There are of course other ways to describe patch instruction, e.g. the Firebase format for patching JSON that don't comply with the PATCH RFC - I'm look for those formats that do comply.
TL;DR: How to describe patches for byte data? Is there any existing RFC or quasi-standard for describing those patches, especially data appending?