test on Nostr: Hello world

{ "id": "15e07e472f66ce93a47b472fe4721adaab024d6ab12d9883756c10df76dd4736", "pubkey": "972f233aa467bc9804032c0bce0a117daead5473c56c91e811a216bdd08c08cf", "created_at": 1726372789, "kind": 1, "tags": [], "content": "Hello world", "sig": "1b1b1c01aed94d2ff14a9014e00d7ae2cad717b4d0b59d1973d1816a5518bcfd5d407ef498da4818f6366b42740b854d6cc434de1a18bf865dd865553bcab2db" }