Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQA/1w2Y3OIJg6OmXd8dedCHUSV91XL9SSWDAt7U4WNYCRucUEhGpYb0U5Js… (1,748 chars)"
  }
}