Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwBpF6UhB+ZxLsB1+fK8YdnswQaIM/G7TgxxOVVXz4Pw5XKrQUOTPVmujBHh… (844 chars)"
  }
}