It's not our intent that these be editable, nor to provide a means to create rules through creating a JSON file. Your editor is misleading you. So the comments about the JSON formatting are not really right. If you want whatever rule that came from to work, it would of necessity be formatted that way.
I'm afraid that it would take a great deal of effort to reverse engineer RM this way, and there would be no reason to think that its internals might not change at any time.
Looking at the title of this topic, we undertook to provide a means to save, clone and restore rules, but not the 'cooking recipe' part.
