curl --request POST \
  --url https://api.jtl-cloud.com/erp/v2/sales/calculatesalesentity \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --header 'x-tenant-id: <x-tenant-id>' \
  --data '
{
  "changes": [
    {
      "companyId": "b45f6432-2462-4c6f-b00f-1d9d01000000",
      "customerId": "b45f6432-2462-4c6f-b00f-1d9d01000000",
      "shippingMethodId": "b45f6432-2462-4c6f-b00f-1d9d01000000",
      "lineItemChanges": {
        "create": [
          {
            "syncNumber": 123,
            "itemId": "b45f6432-2462-4c6f-b00f-1d9d01000000",
            "quantity": 123
          }
        ],
        "update": [
          {
            "syncNumber": 123,
            "quantity": 123,
            "salesPriceNet": 123,
            "salesPriceGross": 123,
            "discountPercent": 123,
            "taxClassId": "b45f6432-2462-4c6f-b00f-1d9d01000000"
          }
        ],
        "delete": [
          123
        ]
      },
      "currencyIso": "<string>",
      "currencyFactor": 123,
      "departureCountryIso": "<string>",
      "departureCountryStateCode": "<string>",
      "extraWeight": 123
    }
  ]
}
'