curl --request POST \
  --url https://api.insightai.in/fraud-detection/customers/load \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form file=@example-file

{
  "status": "<string>",
  "loadedCount": 123,
  "failedCount": 123,
  "errorDetails": [
    {
      "error": "<string>",
      "message": "<string>"
    }
  ]
}