curl --request POST \
  --url https://api.example.com/api/audit-trail/import/preview \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: multipart/form-data' \
  --form file='@example-file'

{
  "filename": "<string>",
  "columns": [
    "<string>"
  ],
  "record_count": 0,
  "valid_record_count": 0,
  "invalid_record_count": 0,
  "base_columns": [
    "<string>"
  ],
  "param_columns": [
    "<string>"
  ],
  "supported_columns": [
    "<string>"
  ],
  "unknown_columns": [
    "<string>"
  ],
  "missing_required_columns": [
    "<string>"
  ],
  "valid": false,
  "errors": [
    {
      "message": "<string>",
      "row_number": 123,
      "column": "<string>"
    }
  ],
  "warnings": [
    "<string>"
  ]
}