Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwEUiy1RtbqUlo/AEzPF2Nb7CJGWnODiAmr9K2wWjpILHh6pUmF0fNmRKWG/… (844 chars)"
  }
}