Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwEVe1gYS1oDeIlx2jZEOtuZnEEA3D/5QgamjrLHu8QsuHzWl7pP6Prb7oGJ… (844 chars)"
  }
}