Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwEz4e6cblSCoz+vg8maXmwsrpMNI9Pnd9u5iXLmXEYD3DlhG5PUAeb6ZSxq… (844 chars)"
  }
}