Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwE6U0rpb09WMj6Xj/vkik7hpS8p9uQDc4jduTpFMnL4zG1Q5nWfM5X6enIJ… (844 chars)"
  }
}