quest on Nostr: Been trying to figure out how avatar updates are handled in Nostr. Looked through all ...

Been trying to figure out how avatar updates are handled in Nostr. Looked through all the NIPs, and can only find banner references in NIP-24, but nothing about avatars.

Anyone have suggestions on where I can look? They are obviously supported, since every major client allows you to set it. I just can't seem to find it.

https://github.com/nostr-protocol/nips