what i managed to understand so far is: you can get the resource path name, on amalthea files its "d7\/ad\/1e3a94a3d3d8348febde5d2a1a030e2f06f12ba16f14d7ad\/scenario.json"
and put it after the usual link where the scripts were getting the file from, which is "https://cf.static.r.kamihimeproject.dmmgames.com/scenarios/", which will take you to the scenario.json file.
EDIT: you still need to change the file a bit but if you use the older files as base you should be fine