Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAADuAEAAAAHDQBlMAxZgwSs+V4njbvmNh8sPi/ZOJoMTGL3+n4DxmPe5hRARkZWq2qBSU6/… (1,748 chars)"
  }
}