Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwAyPbdI/uPNKnyJlFvz0HZUHNcvFInuZgT3KP5pj+9uk2liC3k05c7vOj0K… (844 chars)"
  }
}