Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwEp+GokfIqc417aCiY/7Zm8BnfXOnKPHD0YuXY/kKfGFBVIG2xI8gP2r6Vf… (844 chars)"
  }
}