test on Nostr: Hello world!

{ "id": "1c3aea46204d0b26ff7728e8928c09c819358c42d9e7b23a955aee4180c10947", "pubkey": "972f233aa467bc9804032c0bce0a117daead5473c56c91e811a216bdd08c08cf", "created_at": 1726373111, "kind": 1, "tags": [], "content": "Hello world!", "sig": "c3bfc9365187d594d66db7fe211ed83a8553a4eb2f464a8dc4c7146244b8fdcfc03dd5ddcf21bb38307a1e62e095f2acd7cf96a3c1054aee71f8cfbbcd90d8ca" }