Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwDT4Pnc9lMTtEwED+IdnT5dE7rTYEg17MqoOjY4wEI+LjL7JCzOx4ZaBZoW… (844 chars)"
  }
}