Update Author and Description

Apologies if I just could not find the answer via search, but I am trying to update authors in bulk for some presets that I have. Is there an easy way or a utility for doing this on presets that have a blank author or description?

Presets are JSON data so you can write a script that parses through a list of presets and makes the changes there.

Thanks Herman, I was hoping for a more user-friendly solution, but it sounds like there may not be one available.