Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGByjVgsynnrz35mEHqpE+9Uy4lEwEgQjj7AqwKUq8LXRKOw9lLX5Tma0NC… (844 chars)"
  }
}