Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwG4g3Z7yJtq5iKRqzrTQJGtJPBjG8P72F2n+Zm/z1op/EjebD0RYB2Kw7RJ… (844 chars)"
  }
}