username on Nostr: Hello world

{ "id": "dc266be5599d6030c39140cadae9e8270d4b30820e306f23be3b326aed913552", "pubkey": "79dff8f82963424e0bb02708a22e44b4980893e3a4be0fa3cb60a43b946764e3", "created_at": 1716563382, "kind": 1, "tags": [], "content": "Hello world", "sig": "9107c6d67226a4d795dd884a660996d1abdb1a2d7901ae8e24dab75d2d382a41c5519cea4d6f4f78b79678534156b0242fba5003c32145d72a13b66c61d08a3f" }