Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwA7GwQtlZDu2/7gufP29nM4N9eXq9DVBv5Mxz0GOz4P7hH0wXBKj0KL6Q4/… (844 chars)"
  }
}