Transaction

{
  "update_price_feed": {
    "vaa": "UE5BVQEAAAABJAEAAAABAwB4hEUplvHgf/CnxRsA6nqNYwoL1EX/1xV3V9PfLSIMIBcUO7wxGSFIp7HZ… (844 chars)"
  }
}