curl --request PATCH \
  --url https://api.service.getjusto.com/v3/ordering/customers/{externalCustomerId}/websites/{domain}/cart/items/{cartItemId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "productId": "<string>",
  "amount": 123,
  "modifiers": [
    {
      "modifierId": "<string>",
      "optionsIds": [
        "<string>"
      ]
    }
  ],
  "comment": "<string>"
}
'

import requests

url = "https://api.service.getjusto.com/v3/ordering/customers/{externalCustomerId}/websites/{domain}/cart/items/{cartItemId}"

payload = {
    "productId": "<string>",
    "amount": 123,
    "modifiers": [
        {
            "modifierId": "<string>",
            "optionsIds": ["<string>"]
        }
    ],
    "comment": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.patch(url, json=payload, headers=headers)

print(response.text)

const options = {
  method: 'PATCH',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    productId: '<string>',
    amount: 123,
    modifiers: [{modifierId: '<string>', optionsIds: ['<string>']}],
    comment: '<string>'
  })
};

fetch('https://api.service.getjusto.com/v3/ordering/customers/{externalCustomerId}/websites/{domain}/cart/items/{cartItemId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.service.getjusto.com/v3/ordering/customers/{externalCustomerId}/websites/{domain}/cart/items/{cartItemId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PATCH",
  CURLOPT_POSTFIELDS => json_encode([
    'productId' => '<string>',
    'amount' => 123,
    'modifiers' => [
        [
                'modifierId' => '<string>',
                'optionsIds' => [
                                '<string>'
                ]
        ]
    ],
    'comment' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "https://api.service.getjusto.com/v3/ordering/customers/{externalCustomerId}/websites/{domain}/cart/items/{cartItemId}"

	payload := strings.NewReader("{\n  \"productId\": \"<string>\",\n  \"amount\": 123,\n  \"modifiers\": [\n    {\n      \"modifierId\": \"<string>\",\n      \"optionsIds\": [\n        \"<string>\"\n      ]\n    }\n  ],\n  \"comment\": \"<string>\"\n}")

	req, _ := http.NewRequest("PATCH", url, payload)

	req.Header.Add("Authorization", "Bearer <token>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.patch("https://api.service.getjusto.com/v3/ordering/customers/{externalCustomerId}/websites/{domain}/cart/items/{cartItemId}")
  .header("Authorization", "Bearer <token>")
  .header("Content-Type", "application/json")
  .body("{\n  \"productId\": \"<string>\",\n  \"amount\": 123,\n  \"modifiers\": [\n    {\n      \"modifierId\": \"<string>\",\n      \"optionsIds\": [\n        \"<string>\"\n      ]\n    }\n  ],\n  \"comment\": \"<string>\"\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.service.getjusto.com/v3/ordering/customers/{externalCustomerId}/websites/{domain}/cart/items/{cartItemId}")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Patch.new(url)
request["Authorization"] = 'Bearer <token>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"productId\": \"<string>\",\n  \"amount\": 123,\n  \"modifiers\": [\n    {\n      \"modifierId\": \"<string>\",\n      \"optionsIds\": [\n        \"<string>\"\n      ]\n    }\n  ],\n  \"comment\": \"<string>\"\n}"

response = http.request(request)
puts response.read_body

{
  "success": true,
  "data": {
    "item": {
      "_id": "<string>",
      "productId": "<string>",
      "menuId": "<string>",
      "amount": 123,
      "quantity": 123,
      "comment": "<string>",
      "modifiers": [
        {}
      ],
      "product": {},
      "unitPrice": 123,
      "totalPrice": 123
    },
    "state": {
      "_id": "<string>",
      "placeId": "<string>",
      "menuId": "<string>",
      "channel": "<string>",
      "tableName": "<string>",
      "time": "<string>",
      "deliverAt": "<string>",
      "timeLabel": "<string>",
      "itsStoreOpenAtTime": true,
      "paymentType": "<string>",
      "paymentTypeIsIntegration": true,
      "cardId": "<string>",
      "selectedPaymentMethodKey": "<string>",
      "otherPaymentType": "<string>",
      "couponCode": "<string>",
      "loyaltyProgram": {},
      "externalLoyaltyProgram": {},
      "useExternalLoyalty": true,
      "websiteCoinsToSpend": 123,
      "externalLoyaltyCoinsToSpend": 123,
      "justoCoinsToSpend": 123,
      "tipAmount": 123,
      "tipPercentage": 123,
      "bagsRequired": 123,
      "storeId": "<string>",
      "sessionEmail": "<string>",
      "sessionEmailHasAccount": true,
      "sessionPhone": "<string>",
      "isOutOfBounds": true,
      "currentReducedDemandMessage": "<string>",
      "address": {
        "_id": "<string>",
        "streetAddress": "<string>",
        "extendedAddress": "<string>",
        "locality": "<string>",
        "countryName": "<string>",
        "placeId": "<string>",
        "location": {
          "lat": -33.43219757080078,
          "lng": -70.59982299804688
        }
      },
      "store": {
        "_id": "<string>",
        "acceptDelivery": true,
        "acceptGo": true,
        "acceptServe": true,
        "name": "<string>",
        "minimumAnticipationDays": 123,
        "currentExtraDeliveryCost": 123,
        "hideTip": true,
        "forceHideDeliveryTip": true,
        "defaultsManagedDelivery": true,
        "availableScheduleDaysOptions": [
          {
            "label": "<string>",
            "value": "<string>"
          }
        ],
        "extendedAddress": "<string>",
        "streetAddress": "<string>",
        "location": {
          "lat": -33.43219757080078,
          "lng": -70.59982299804688
        },
        "itsOpenNow": true,
        "itsOpenAtTime": true,
        "disableNowOrders": true,
        "availablePaymentMethods": [
          {
            "paymentMethodKey": "<string>",
            "label": "<string>",
            "canDeliver": true,
            "isIntegration": true,
            "allowedDeliveryTypes": [],
            "requiresRoundTrip": true,
            "isAvailableInV3": true,
            "otherPaymentType": "<string>",
            "paymentType": "<string>",
            "extraPaymentInformation": {}
          }
        ],
        "savedUserCards": [
          {
            "_id": "<string>",
            "brandId": "<string>",
            "brandName": "<string>",
            "label": "<string>",
            "last4": "<string>",
            "paymentMethodKey": "<string>",
            "paymentType": "<string>",
            "cardBin": "<string>"
          }
        ]
      },
      "cart": {
        "deliveryFee": 123,
        "deliveryFeeWithoutDiscount": 123,
        "freeDeliveryProgress": {
          "source": "<string>",
          "threshold": 123,
          "currentItemsPrice": 123,
          "missingAmount": 123,
          "isFree": true,
          "searchedUntil": "<string>"
        },
        "serviceFee": 123,
        "amountToPay": 123,
        "totalPrice": 123,
        "calculatedTipAmount": 123,
        "benefits": [
          {
            "benefitPromotionId": "<string>",
            "type": "<string>",
            "label": "<string>",
            "totalDiscount": 123,
            "productIds": [
              "<string>"
            ]
          }
        ],
        "couponStatus": {
          "code": "<string>",
          "description": "<string>",
          "couponId": "<string>",
          "discountOnDeliveryFee": 123,
          "discountOnFullPrice": 123,
          "discountOnItems": 123,
          "errorMessage": "<string>",
          "errorType": "<string>",
          "errorActionHint": "<string>",
          "errorActionLinks": [
            {
              "label": "<string>",
              "url": "<string>"
            }
          ],
          "allErrors": [
            {
              "message": "<string>",
              "errorType": "<string>",
              "actionHint": "<string>",
              "actionLinks": [
                {
                  "label": "<string>",
                  "url": "<string>"
                }
              ],
              "minimumOrderPrice": 123,
              "currentItemsPrice": 123
            }
          ],
          "name": "<string>",
          "minimumOrderPrice": 123,
          "currentItemsPrice": 123,
          "requiresPaymentTypes": [
            "<string>"
          ],
          "requiredBINs": [
            "<string>"
          ],
          "requiredPaymentMethodCodes": [
            "<string>"
          ]
        },
        "itemsPrice": 123,
        "itemsPriceWithoutDiscount": 123,
        "totalLoyaltyDiscount": 123,
        "itemsPriceWithoutLoyaltyDiscount": 123,
        "itemsPriceWithOnlyItemsDiscount": 123,
        "hasDynamicDeliveryFee": true,
        "bagAmount": 123,
        "calculatedBagsRequired": 123,
        "maxBagsAllowed": 123,
        "items": [
          {
            "_id": "<string>",
            "amount": 123,
            "totalPrice": 123,
            "productId": "<string>",
            "isOutOfStock": true,
            "unitPrice": 123,
            "unitPriceWithoutDiscount": 123,
            "comment": "<string>",
            "outOfStockMessage": "<string>",
            "modifiers": [
              {}
            ],
            "descriptionItems": [
              {}
            ],
            "product": {
              "_id": "<string>",
              "name": "<string>",
              "images": [
                {
                  "_id": "<string>",
                  "url": "<string>",
                  "colorsData": {
                    "blurhash": "<string>",
                    "background": "<string>",
                    "front": "<string>"
                  },
                  "dimensions": {
                    "width": 123,
                    "height": 123
                  },
                  "resizedData": {
                    "thumbnailURL": "<string>",
                    "smallURL": "<string>",
                    "mediumURL": "<string>",
                    "largeURL": "<string>",
                    "extraLargeURL": "<string>"
                  }
                }
              ],
              "modifiers": [
                {}
              ]
            }
          }
        ]
      },
      "website": {
        "_id": "<string>",
        "allowsJustoCoins": true,
        "allowsWebsiteCoins": true,
        "showStoreName": true
      },
      "billing": {},
      "tip": {},
      "cashAmount": 123,
      "gift": {},
      "orderParams": {},
      "termSignatures": [
        {
          "termType": "termsAndConditions",
          "version": "<string>"
        }
      ],
      "meta": {},
      "sessionBirthday": "<string>",
      "options": {
        "billing": {
          "value": {},
          "schema": [
            {}
          ],
          "required": true,
          "countryCode": "CL"
        },
        "terms": {
          "mode": "auto",
          "hidden": true,
          "checked": true,
          "signatures": [
            {
              "termType": "termsAndConditions",
              "version": "<string>"
            }
          ],
          "terms": [
            {
              "termType": "<string>",
              "version": "<string>",
              "optional": true,
              "title": "<string>",
              "checkboxLabel": {}
            }
          ]
        }
      }
    }
  }
}