test on Nostr: Hello world

{ "id": "30a3af5a43d8257b2e262609540775ba42c0b7b593c3728f52ac2e0e5f600981", "pubkey": "972f233aa467bc9804032c0bce0a117daead5473c56c91e811a216bdd08c08cf", "created_at": 1725889675, "kind": 1, "tags": [], "content": "Hello world", "sig": "48ccd3d21945db01fd21ccb47475fece068f90e34dd9c67da629b71428945b770f1ff6ef13a058614511ae496546c51fb48f38b446ee54ff51eb887b0d0fdb91" }