curl --request GET \
  --url https://api.goproxy.com/go-api/v1/account/plan \
  --header 'apiKey: <apikey>'

{
  "plan": [
    {
      "status": 1,
      "totalTraffic": "1.0",
      "availableTraffic": "0.9",
      "planName": "1GB",
      "effectTime": "2024-12-01 15:30:00 UTC+8",
      "expireTime": "2025-01-01 15:30:00 UTC+8",
      "orderId": "HW20241201153000000",
      "billingCycle": "one_time"
    }
  ]
}