Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAAAAwH5L5m6hstGFt5Hf0WZFCW4SxHGBk1JPY/Oa3wbIPKSHCHKz+U2tkj0X9KI… (844 chars)"
  }
}