Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwHWIYSS1xqRC/1DvwuDjEH89oWAczrYhWqZBpCEyiUiCFYvi2a6sSSJWxfh… (844 chars)"
  }
}