Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwB9DSPVbcnwMdDB1A8c5DwSXOV6Z0QDK4b6XymTB1jWV1A7K9G3YriqJx9/… (844 chars)"
  }
}