Similar NIP
nip4e: decoupling encryption from identity
https://github.com/nostr-protocol/nips/pull/1647
for your proposal is like something similar to higher relay? nostr:npub1aljazgxlpnpfp7n5sunlk3dvfp72456x6nezjw4sd850q879rxqsthg9jp nostr:npub18pudjhdhhp2v8gxnkttt00um729nv93tuepjda2jrwn3eua5tf5s80a699 https://github.com/bitkarrot/higher