You are right, the Solid Lite spec is rather short. I'm looking forward to the sister spec for Nostr. I just commented on the article by nostr:npub1r30l8j4vmppvq8w23umcyvd3vct4zmfpfkn4c7h2h057rmlfcrmq9xt9ma, nostr:naddr1qq2hwdjsx9gkw666vd9j6mzxfeaxzsj8d33xwq3qr30l8j4vmppvq8w23umcyvd3vct4zmfpfkn4c7h2h057rmlfcrmqxpqqqp65wmm38sa

I think NIP-32 can be quite useful and a good starting point.