{
  "request": {
    "method": "GET",
    "url": "https://chat.signal.org/v1/accounts/whoami",
    "headers": {
      "Authorization": "Basic base64(+15551234567:signaling-key-value)"
    }
  },
  "response": {
    "status": 200,
    "body": {
      "uuid": "3fa85f64-5717-4562-b3fc-2c963f66afa6",
      "pni": "7b3d9e21-1234-4abc-9def-abc123def456",
      "number": "+15551234567",
      "usernameHash": null
    }
  }
}