Using you nostr client, you should be able to see the a new dm request that includes the cashu token sent to you.
Discussion
I’m using Damus as my client.
Where would I see this?
nostr:npub1dx5q2el8nd4eh3eg9t2e25fd7zuqg7zxz6ldkc3uzgh66ss2yc6st288sj nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s