Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwH6yqx5hiQJdgP8pguMYYr7Wyw7I0Oo/BIV9h0QFBUfSB4l1hMT5ujF3qhT… (844 chars)"
  }
}