This is all i could find. Only looked at it for about an hour.
This is where I'm thinking the UV start. The data looks something like this. Not sure of the padding or what have you just yet but its looking like there might not be any at all. I'd have to research more to know more but I started here. This data is laid out like faces so it is kind of confusing.
And I was able to find some kind of mesh. Don't know what this character is exactly but this is something.
Best advice is to keep trying. You will figure it out eventually. There is only a certain amount of possibilities it could be. Have trouble again or still not able to find them message me.