curl --request PUT \
  --url https://nxt-ulm-pdt.m1amdocs.io/platform/rest/v85/runtime \
  --header 'Content-Type: application/json' \
  --cookie JSESSIONID= \
  --data '
{
  "displayName": "Entity display name",
  "version": "4.1.1",
  "attributes": {
    "macAddress": "<string>",
    "externalDeviceGUID": "<string>"
  }
}
'

import requests

url = "https://nxt-ulm-pdt.m1amdocs.io/platform/rest/v85/runtime"

payload = {
    "displayName": "Entity display name",
    "version": "4.1.1",
    "attributes": {
        "macAddress": "<string>",
        "externalDeviceGUID": "<string>"
    }
}
headers = {
    "cookie": "JSESSIONID=",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'PUT',
  headers: {cookie: 'JSESSIONID=', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    displayName: 'Entity display name',
    version: '4.1.1',
    attributes: {macAddress: '<string>', externalDeviceGUID: '<string>'}
  })
};

fetch('https://nxt-ulm-pdt.m1amdocs.io/platform/rest/v85/runtime', 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://nxt-ulm-pdt.m1amdocs.io/platform/rest/v85/runtime",
  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([
    'displayName' => 'Entity display name',
    'version' => '4.1.1',
    'attributes' => [
        'macAddress' => '<string>',
        'externalDeviceGUID' => '<string>'
    ]
  ]),
  CURLOPT_COOKIE => "JSESSIONID=",
  CURLOPT_HTTPHEADER => [
    "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://nxt-ulm-pdt.m1amdocs.io/platform/rest/v85/runtime"

	payload := strings.NewReader("{\n  \"displayName\": \"Entity display name\",\n  \"version\": \"4.1.1\",\n  \"attributes\": {\n    \"macAddress\": \"<string>\",\n    \"externalDeviceGUID\": \"<string>\"\n  }\n}")

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

	req.Header.Add("cookie", "JSESSIONID=")
	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://nxt-ulm-pdt.m1amdocs.io/platform/rest/v85/runtime")
  .header("cookie", "JSESSIONID=")
  .header("Content-Type", "application/json")
  .body("{\n  \"displayName\": \"Entity display name\",\n  \"version\": \"4.1.1\",\n  \"attributes\": {\n    \"macAddress\": \"<string>\",\n    \"externalDeviceGUID\": \"<string>\"\n  }\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://nxt-ulm-pdt.m1amdocs.io/platform/rest/v85/runtime")

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

request = Net::HTTP::Put.new(url)
request["cookie"] = 'JSESSIONID='
request["Content-Type"] = 'application/json'
request.body = "{\n  \"displayName\": \"Entity display name\",\n  \"version\": \"4.1.1\",\n  \"attributes\": {\n    \"macAddress\": \"<string>\",\n    \"externalDeviceGUID\": \"<string>\"\n  }\n}"

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

{
  "activatedDate": 1514766808000,
  "attributes": {
    "macAddress": "000000000001A0",
    "externalDeviceGUID": "<string>"
  },
  "buildType": "Production",
  "createdDate": 1538682581776,
  "deactivatedDate": 1543833950000,
  "deviceType": "phone",
  "displayName": "Paul's iPad",
  "guid": "DEF123",
  "id": 1,
  "platformType": "android",
  "status": "activated",
  "suspendedDate": 1527917430000,
  "type": "com.uxpsystems.ulm.entity.RegularEntityType",
  "updatedDate": 1538682581776,
  "userAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36",
  "version": "4.1.1"
}

{
  "fieldErrors": [
    {
      "field": "<string>",
      "code": "<string>",
      "code_v2": "length",
      "message": "length must be between 0 and 255",
      "rejectedValue": "a string that contains more than 255 characters"
    }
  ],
  "operationErrors": [
    {
      "code": "missing-or-invalid-input-field",
      "message": "GUID not present in request, provide GUID in login request"
    }
  ]
}

{
  "operationError": {
    "code": "<string>",
    "message": "Bad user input",
    "type": "<string>",
    "authorities": [
      "<string>"
    ]
  },
  "stackTrace": "<string>",
  "operationErrors": [
    {
      "code": "authentication-required",
      "message": "Full Authentication Required"
    }
  ]
}

{
  "operationError": {
    "code": "<string>",
    "message": "Bad user input",
    "type": "<string>",
    "authorities": [
      "<string>"
    ]
  },
  "stackTrace": "<string>",
  "operationErrors": [
    {
      "code": "ACCESS_FORBIDDEN",
      "message": "Access Denied"
    }
  ]
}

{
  "operationErrors": [
    {
      "code": "restClientRuntime-not-found",
      "message": "Information for the following resource was not found: com.uxpsystems.mint.framework.device.model.RestClientRuntime[id:909]"
    }
  ]
}