Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwHfRsI9hC8IvUl6fv76+LoPQXeUkYWk3KGtIcqfLq/oT2Og+KMV002VlMnZ… (844 chars)"
  }
}