curl --request GET \
  --url http://api.dev.smarterproctoring.com/v1/installs/{installSid}/reports/unscheduledLearners \
  --header 'token: <api-key>'

{
  "total": 123,
  "first": "<string>",
  "next": "<string>",
  "prev": "<string>",
  "last": "<string>",
  "count": 123,
  "offset": 123,
  "results": [
    {
      "sid": "<string>",
      "firstName": "<string>",
      "lastName": "<string>",
      "email": "<string>"
    }
  ]
}