curl --request GET \
  --url https://api.ppio.com/openapi/v1/billing/bill/monthly/list \
  --header 'Authorization: <authorization>'

{
  "bills": [
    {
      "userId": "<string>",
      "memberId": "<string>",
      "startTime": "<string>",
      "endTime": "<string>",
      "productName": "<string>",
      "productCategory": "<string>",
      "ownerID": "<string>",
      "tradeMode": "<string>",
      "tradeType": "<string>",
      "basePrice": "<string>",
      "billNum": "<string>",
      "amount": "<string>",
      "voucherAmount": "<string>",
      "payAmount": "<string>",
      "payAmountDisplay": "<string>",
      "pricePrecision": "<string>",
      "createTime": "<string>",
      "cycle": "<string>",
      "storageDays": "<string>"
    }
  ]
}