username on Nostr: Hello world

{ "id": "a72523d7b756dd3967eb89731b0ac9f6337c4c7fbe000f0c146f1c2437c61687", "pubkey": "79dff8f82963424e0bb02708a22e44b4980893e3a4be0fa3cb60a43b946764e3", "created_at": 1716547153, "kind": 1, "tags": [], "content": "Hello world", "sig": "563a38c9725fe25cd53ef06aab371e39a9e025dfb91c7e45c8641b72ea03406780b3c8f63d564e08a00944fc96e51f0d0dc1bb9e893c0da1c15d81be84eb46d2" }