curl --request GET \
  --url https://ramp-sandbox.hexarails.ai/customer/list \
  --header 'X-API-Key: <api-key>'

{
  "status": "SUCCESS",
  "data": {
    "list": [
      {
        "id": "<string>",
        "realName": "<string>",
        "type": "<string>",
        "country": "<string>",
        "countryName": "<string>",
        "dob": "<string>",
        "remark": "<string>",
        "createTime": "<string>",
        "externalId": "<string>"
      }
    ],
    "total": 123,
    "pageNum": 123,
    "pageSize": 123
  }
}