Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwCgQR8O5/Zq8c0Whx0hyWOxdh2g2xV5gD6+e35ogNeh6xyPG6IdQ0bzR8rF… (844 chars)"
  }
}