username on Nostr: Hello world

{ "id": "7981a3250d73601422be24c319442310f14d51b182f7fb3b3cc874bfe9d6e9e3", "pubkey": "79dff8f82963424e0bb02708a22e44b4980893e3a4be0fa3cb60a43b946764e3", "created_at": 1741901149, "kind": 1, "tags": [], "content": "Hello world", "sig": "f791008f465ef4349162ad90752c84b9950ed0928509c30198f35d5fea6aca1a7b98618bfcb8d0d4f277748ee57ce0c444d654c0ab8ad591f934fa7ca732d529" }