Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwB9jX4L0c9OqH53/0SmaIZ7rHYoOlZwjNS1zF1FYc4Rs3TR5QKJhNYojKNw… (844 chars)"
  }
}