Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwBVr/gPkFFmPwzm1sBSP4Wyt7GYM8ozhu8xZgkfWJD5ynIh5gPW5/p5SEi9… (844 chars)"
  }
}