Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwF4WZ5yrZ6sG7gMEmGzNM+wbBqXzlm5/QUc9rGRKBsFkE2qjyUebFn5Q4xb… (844 chars)"
  }
}