curl --request GET \
  --url https://api.service.getjusto.com/v3/tabs/{storeId}/shifts/active

{
  "success": true,
  "data": {
    "_id": "<string>",
    "websiteId": "<string>",
    "storeId": "<string>",
    "startedAt": "2020-01-01T00:00:00.000Z",
    "endedAt": "2020-01-01T00:00:00.000Z",
    "createdById": "<string>"
  }
}