Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwB5CZfTqAYWAVDdsbw1lJSnbJKTz3F+jVBnPpr9K8zJ/UyhYb75uJu1fSBu… (844 chars)"
  }
}