curl --request PUT \
  --url https://panel.sendcloud.sc/api/v2/parcels \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "parcel": {
    "id": 3,
    "name": "Sendcloud Userß",
    "address": "Stadhuisplein 10",
    "postal_code": "5611 EM",
    "city": "Eindhoven",
    "country": "NL",
    "company_name": "Summer Co"
  }
}
'

import requests

url = "https://panel.sendcloud.sc/api/v2/parcels"

payload = { "parcel": {
        "id": 3,
        "name": "Sendcloud Userß",
        "address": "Stadhuisplein 10",
        "postal_code": "5611 EM",
        "city": "Eindhoven",
        "country": "NL",
        "company_name": "Summer Co"
    } }
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    parcel: {
      id: 3,
      name: 'Sendcloud Userß',
      address: 'Stadhuisplein 10',
      postal_code: '5611 EM',
      city: 'Eindhoven',
      country: 'NL',
      company_name: 'Summer Co'
    }
  })
};

fetch('https://panel.sendcloud.sc/api/v2/parcels', 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://panel.sendcloud.sc/api/v2/parcels",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "PUT",
  CURLOPT_POSTFIELDS => json_encode([
    'parcel' => [
        'id' => 3,
        'name' => 'Sendcloud Userß',
        'address' => 'Stadhuisplein 10',
        'postal_code' => '5611 EM',
        'city' => 'Eindhoven',
        'country' => 'NL',
        'company_name' => 'Summer Co'
    ]
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic <encoded-value>",
    "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://panel.sendcloud.sc/api/v2/parcels"

	payload := strings.NewReader("{\n  \"parcel\": {\n    \"id\": 3,\n    \"name\": \"Sendcloud Userß\",\n    \"address\": \"Stadhuisplein 10\",\n    \"postal_code\": \"5611 EM\",\n    \"city\": \"Eindhoven\",\n    \"country\": \"NL\",\n    \"company_name\": \"Summer Co\"\n  }\n}")

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

	req.Header.Add("Authorization", "Basic <encoded-value>")
	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.put("https://panel.sendcloud.sc/api/v2/parcels")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"parcel\": {\n    \"id\": 3,\n    \"name\": \"Sendcloud Userß\",\n    \"address\": \"Stadhuisplein 10\",\n    \"postal_code\": \"5611 EM\",\n    \"city\": \"Eindhoven\",\n    \"country\": \"NL\",\n    \"company_name\": \"Summer Co\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://panel.sendcloud.sc/api/v2/parcels")

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

request = Net::HTTP::Put.new(url)
request["Authorization"] = 'Basic <encoded-value>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"parcel\": {\n    \"id\": 3,\n    \"name\": \"Sendcloud Userß\",\n    \"address\": \"Stadhuisplein 10\",\n    \"postal_code\": \"5611 EM\",\n    \"city\": \"Eindhoven\",\n    \"country\": \"NL\",\n    \"company_name\": \"Summer Co\"\n  }\n}"

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

{
  "parcel": [
    {
      "id": 3,
      "name": "Anna Tester",
      "company_name": "Summer Co",
      "address": "Stadhuisplein 10",
      "address_divided": {
        "street": "Stadhuisplein",
        "house_number": "10"
      },
      "city": "Eindhoven",
      "postal_code": "5611 EM",
      "telephone": "0612345678",
      "email": "test@email.com",
      "date_created": "01-01-2018 21:45:30",
      "date_updated": "01-01-2018 21:45:31",
      "date_announced": "01-01-2018 21:45:31",
      "tracking_number": "S0M3TR4Ck1NgNumB3r",
      "weight": "2.000",
      "label": {
        "normal_printer": [
          "https://panel.sendcloud.sc/api/v2/label/normal_printer/3172?start_from=0&hash=bbfd669ee9ebb19408b85b33d181a50040fd9bc4",
          "https://panel.sendcloud.sc/api/v2/label/normal_printer/3172?start_from=1&hash=bbfd669ee9ebb19408b85b33d181a50040fd9bc4",
          "https://panel.sendcloud.sc/api/v2/label/normal_printer/3172?start_from=2&hash=bbfd669ee9ebb19408b85b33d181a50040fd9bc4",
          "https://panel.sendcloud.sc/api/v2/label/normal_printer/3172?start_from=3&hash=bbfd669ee9ebb19408b85b33d181a50040fd9bc4"
        ],
        "label_printer": "https://panel.sendcloud.sc/api/v2/label/label_printer/3172?hash=bbfd669ee9ebb19408b85b33d181a50040fd9bc4"
      },
      "customs_declaration": {},
      "status": {
        "id": 0,
        "message": "Ready to send"
      },
      "data": {},
      "country": {
        "iso_2": "NL",
        "iso_3": "NLD",
        "name": "Netherlands"
      },
      "shipment": {
        "id": 1,
        "name": "PostNL Standard 0-23kg"
      },
      "carrier": {
        "code": "postnl"
      },
      "colli_uuid": "ab3ecb5e-61b6-42b1-8034-7c6befdeaa63",
      "collo_nr": 0,
      "collo_count": 1,
      "reference": "some_reference_123"
    }
  ]
}