I was thinking among those line also. But making changes in a json file is really cumbersome and very error sensitive. Doing it manually is less hassle then this and trying to use csv import I believe. Unless you deploy on a greater scale or regularly
Well… cumbersome and error sensitive is better then not having the CoA I need 
Using JSON Editor app could help.
JSON Editor app … u mean something like https://jsoneditoronline.org/ right? True that’d help a lot.