username on Nostr: Hello world

{ "id": "e210ef208989b08382ea1ce607350a6fe367df92736c7cc9da3282ee52ecc2e1", "pubkey": "79dff8f82963424e0bb02708a22e44b4980893e3a4be0fa3cb60a43b946764e3", "created_at": 1697552370, "kind": 1, "tags": [], "content": "Hello world", "sig": "9c6e462ef925216e1f87fafa2fd816765637924bc0eb2dce551a5ceeaa49424608ba2967ea9542e7899d13c3fb15f4ce5f26df73a6c366fc74f668651b8d8703" }