Transaction

{
  "register_key": {
    "key_id": 1,
    "scheme": "x25519-xchacha20poly1305-v1",
    "pubkey": "wcHb1eAv0QoGdK9uVHR91fCLzECxpsSJZWhCLubQ5AY=",
    "password_protected": true
  }
}