Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwGac29AzBzk0DZsXbbVpE0Kzz6B4F/g1I1B6a3yH7TBgVtzgxFVlTbNQQN/… (844 chars)"
  }
}