Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwB5zz1+XKqCVWnF/d4FXtueEAtVJxbpA7Ubcnu2UPuZDDJmcxgQiEZPo5q9… (844 chars)"
  }
}