Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHBU3TmSQ+6icHatYXlSm4IdZS8ZIa1wH0JsZUi4Av8MiZLYa5SYEd7nrKr… (844 chars)"
  }
}