curl --request POST \
  --url http://localhost:3000/v1/scanner/clock \
  --header 'Content-Type: application/json' \
  --data '
{
  "action": "clock_in",
  "staff_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

{
  "success": true,
  "action": "clock_in",
  "timesheet_id": 123,
  "start_time": "<string>",
  "total_time": 123,
  "operational_unit_id": 123,
  "error": "<string>",
  "message": "<string>",
  "elapsed_minutes": 123,
  "minimum_minutes": 123
}