Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwE0zqJQdOjPtnCR0Oq0z8+IR41aWRkXTzT6yrcQ+Vf7WRzW7pGTzwVfHv99… (844 chars)"
  }
}