Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwDJV+g75+bDa0B6w/sz+Dl2QhpkyYAX7V2kiWmaoFrHGR1f0hGu5qRfZyB2… (844 chars)"
  }
}