curl --request POST \
  --url https://{host}/api/v3/leaveRequests/{id}/approvals \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "approved": false,
  "comment": "your presence is required at the working meeting"
}
'

{
  "Status": 401,
  "Message": "Unauthorized"
}