I’m not sure how much you’ve had to work with JSON files, they pop up everywhere and I’ve also ended up using them to store information. The problem I always face is being able to edit them. JSON in its purest form is just a single line of text so that when loaded into your favorite editor you just see one long line of text which isn’t great for editing. Usually, I will paste the text into an online formatter and paste the pretty version of the JSON back into my editor where I can work with it. Yes, I could load the JSON into a specialist editor, but they are even more tedious to use. Yes, I could install a plugin for Notepad++ and try to remember keystrokes to format the JSON or I could figure out how to install yet another plugin in the sublime text and remember yet another keystroke.
I therefore spent probably an hour creating a simple editor that when I load a JSON file it automatically formats the text. I uploaded it to GitHub. More important here is the link to the binaries. Appologies to Mac owners, it ony works on Windows. I don't have a good open source editor component for the Mac platform.