curl --request POST \
  --url https://api.everhour.com/users/{user_id}/timecards/clock-in \
  --header 'Content-Type: application/json' \
  --header 'X-Api-Key: <api-key>' \
  --data '
{
  "userDate": "2020-11-27"
}
'

{
  "user": 69,
  "workTime": 28800,
  "clockIn": "09:00",
  "clockOut": "18:00",
  "breakTime": 3600,
  "history": [
    {
      "action": "clock-in",
      "previousTime": "08:00",
      "time": "09:00",
      "trigger": "manually"
    }
  ]
}