Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwH5cp+k4EHR9zrDfnPja6wC8Zz2KhPamIWl4sN+HuiaLHnGQeI5qPMpr6tj… (844 chars)"
  }
}