Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQDCOn9QhzHIOu/v5xEY9gAjfUoP9Tn7B5KEXyoEaE7aCHm98otTb6P6hClJ… (1,748 chars)"
  }
}