Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwHLWErFa6pxJYUq7nlhQvfZ8yTnZPyKJBOu8xMqCZNF52F/rjPQl1hvNF7/… (844 chars)"
  }
}