username on Nostr: Hello world

{ "id": "19f3647e69f28cdf2eb2941223986cc6e0e29ffd4a2287c351d3b37a6f93a003", "pubkey": "79dff8f82963424e0bb02708a22e44b4980893e3a4be0fa3cb60a43b946764e3", "created_at": 1693316084, "kind": 1, "tags": [], "content": "Hello world", "sig": "14ea18e7c79f80f3048e5e844d6016b8e161f346f066f6044893b8c66b7aa464877e2681c8e8b288ad15f1094d6f392ba1ed5760f2ea66ee931a2254580c54c3" }