You can see how they will be managed here:

https://github.com/gzuuus/nips/blob/working-branch/XX.md

With nostr:nprofile1qqs2xugc5jyguqkj36rk0syv4tmnkjdtmtperttl7x9rqjy3ustdcvcppemhxue69uhkummn9ekx7mp0qy2hwumn8ghj7un9d3shjtnyv9kh2uewd9hj7qg6waehxw309aek2mnyd96zumn0wdnxcctjv5hxxmmd9uxa0uz8, I already manage them roughly the same as the proposal outlines, but with all information embedded in the content field as a message that's viewable in NIP-17 DM compatible clients.