Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwE6ap/KkR3kLAD6xCUxP3wWhKGOz4eoS0a5M3OtpY9d8zgHp6Kk+Y0W87oe… (844 chars)"
  }
}