Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwFBU9WCcFu6Q7UaVd7YgGEtykotPIvWOjGKZeKYJ8oCxRrhDA5NHa+cf5h+… (844 chars)"
  }
}