Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAGDQCyGJhLd7yIC62KqLsOcvBruQ9ztRi3GKCeBN/fyzhzHGgqA8iX6jUc5eB/… (1,748 chars)"
  }
}