Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwDGVThPC7EyXyOj7iUfCCn0F0ygPu1ds5ZJGaEPELMtR2xEEYNjP6A29Kfe… (844 chars)"
  }
}