Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwGP2znYWu3fz2EAYi0fISc+mgp+hqixKfFbj6JcCsGpv0GfdwZNYpUxGWZ+… (844 chars)"
  }
}