How to parse GBB game.bin

[pccavar]

I was able to download game.bin by referring to gamebuilder.py. Thank you.
In the following line, the argument access_key was missing, so I added GBG.ACCESS_KEY.
It seems that the downloaded game.bin contains data such as jpeg and name. Is there a way to parse this?

NintendoClients/examples/switch/gamebuilder.py

Line 124 in 6bf43e5

param.data_id = code_to_data_id(GAME_CODE)