yeah, all you would need is a random token which would be your account id
Discussion
What about the ecash wallet that has a unified balance across clients that nostr:npub1l2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqutajft is working on?
Damus uses lightning not ecash

mainly because it already took tons of effort just to get lightning and nostr working, and adding an entire new set of primitives for dubious privacy gain isn’t super worth it for us. People wouldn’t even end up using the privacy features of ecash on nostr, you end up zapping the amount publicly anyways.
I think custodial lightning hubs work fine for nostr usecases and are simpler. Also the complexity of managing many different tokens across many different mints gets crazy fast. KISS.