Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwExYJhxP2yKz5H+6CSx8hOzSQEzCDdMb2WwRAVPPVz2fA/a/X56z9ysCwP6… (844 chars)"
  }
}