Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwF65TLzWX4Q1YVaZ78yJZxlW6GgbeMn/1IqTWlAnpnXPBzlB+fv3kSu8uWH… (844 chars)"
  }
}