username on Nostr: Hello world

{ "id": "eb872a53a6da14ec5c14640bf249a7c8a2b4dfeaebf8d746f390e2b370f38dfb", "pubkey": "79dff8f82963424e0bb02708a22e44b4980893e3a4be0fa3cb60a43b946764e3", "created_at": 1735780643, "kind": 1, "tags": [], "content": "Hello world", "sig": "03b8e6567ef3f73ffa254b376ff04dbd306e91894f823588f0dcbf048d2bc860cb527b2e203fc0f49d74840ff19c24203ad608b1fefd25f9fbb4921c2bdb5cc4" }