Issue: https://github.com/BlowaterNostr/blowater/issues/58

Title: Fix NIP-7 regression

Author: nostr:npub1dww6jgxykmkt7tqjqx985tg58dxlm7v83sa743578xa4j7zpe3hql6pdnf

After #55 , NIP07 doesn't work anymore. Fix it. Though I still consider it a not-so-good NIP, it's useful.