I am trying to figure out how the track encoding works because these codes look so random, for example this is a small segment of one of my custom levels “v3GAIVGbsB4pdXYeO84o6KKe3Mr0uyyeu2SanZtxYMNT”

It looks like it has no order and all I know currently is that it is base64 but that’s it, any ideas of how the game generates these codes and how it could be decoded?