Replying to Washing a new era hat , possible ?

hey guys ,   

so i got drunk the other day and i was wearing my a white new era cap . I woke up the next day and it had some dirt spots on it. This pisses me off because its my favourite hat. Anyone have any advice as to how i could clean it. throwing it in the machine seems like a horrible idea. Im not willing to get it all wet since that would remove the sticker and, you know it has to look fresh.

any ideas ? im really busted on this one