Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwE9Zcmf1v3HHEk5Gs8r11Ay8kQZWPbTCqM4Wv28p+eqEEbHZP5i7gaF7jZb… (844 chars)"
  }
}