Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQCTg764JC6DuOmhthwCSxG8CERwY+1iZxXXrxLZjnAXGHQKdIMyA1ziPOF/… (1,748 chars)"
  }
}