Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwFs7gtf7XYwXxXDuTd+PR0WVRVUjqa1CvhIEQmSrZf4B0pXtGU6d6TYY3ZA… (844 chars)"
  }
}