username on Nostr: Hello world

{ "id": "43fb6726ed8247c3ab8a51e5d99bc02795e9ece49ccf4b5309de4c6818c9c644", "pubkey": "79dff8f82963424e0bb02708a22e44b4980893e3a4be0fa3cb60a43b946764e3", "created_at": 1718656717, "kind": 1, "tags": [], "content": "Hello world", "sig": "df2c86cc4b1f4aaa09ea6375f071361224d19489e10fe4e383634aaf0756c28a4ecf0205651a668fa7a23ad1fb76b302364c68ee6160dd5038afb11086baaa86" }