Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwFn4vu3jsul7cDDJpGYtbHCqzCeGqzU6YGP7a+Fk9Qv6g7zlOS4Nu4Xf+SW… (844 chars)"
  }
}