Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwBbG+g7X1CXJWaMc54ZEd2kznKfIQx9nVBov+SZDkPVuAfmqbBpQx8Aa6Cj… (844 chars)"
  }
}