curl --request GET \
  --url https://{appId}.api-{region}.cometchat.io/v3/conversations/{conversationId} \
  --header 'apikey: <api-key>' \
  --header 'onBehalfOf: <onbehalfof>'

import requests

url = "https://{appId}.api-{region}.cometchat.io/v3/conversations/{conversationId}"

headers = {
    "onBehalfOf": "<onbehalfof>",
    "apikey": "<api-key>"
}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {onBehalfOf: '<onbehalfof>', apikey: '<api-key>'}};

fetch('https://{appId}.api-{region}.cometchat.io/v3/conversations/{conversationId}', 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://{appId}.api-{region}.cometchat.io/v3/conversations/{conversationId}",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "apikey: <api-key>",
    "onBehalfOf: <onbehalfof>"
  ],
]);

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

curl_close($curl);

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

package main

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

func main() {

	url := "https://{appId}.api-{region}.cometchat.io/v3/conversations/{conversationId}"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("onBehalfOf", "<onbehalfof>")
	req.Header.Add("apikey", "<api-key>")

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

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

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://{appId}.api-{region}.cometchat.io/v3/conversations/{conversationId}")
  .header("onBehalfOf", "<onbehalfof>")
  .header("apikey", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://{appId}.api-{region}.cometchat.io/v3/conversations/{conversationId}")

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

request = Net::HTTP::Get.new(url)
request["onBehalfOf"] = '<onbehalfof>'
request["apikey"] = '<api-key>'

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

{
  "data": [
    {
      "conversationId": "group_project-group",
      "conversationType": "group",
      "unreadMessageCount": "0",
      "createdAt": 1630071782,
      "updatedAt": 1630481413,
      "lastMessage": {
        "id": "50",
        "conversationId": "group_project-group",
        "sender": "cometchat-uid-4",
        "receiverType": "group",
        "receiver": "project-group",
        "category": "action",
        "type": "groupMember",
        "data": {
          "action": "unbanned",
          "entities": {
            "by": {
              "entity": {
                "uid": "cometchat-uid-4",
                "name": "Susan Marie",
                "role": "default",
                "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-4.webp",
                "status": "offline",
                "createdAt": 1629869270
              },
              "entityType": "user"
            },
            "on": {
              "entity": {
                "uid": "cometchat-uid-3",
                "link": "https://data-us.cometchat.io/assets",
                "name": "George Alan",
                "role": "default",
                "avatar": "https://assets.cometchat.io/sampleapp/v2/users/cometchat-uid-2.webp",
                "status": "offline",
                "createdAt": 1629869270,
                "updatedAt": 1629964825,
                "conversationId": "cometchat-uid-3_user_cometchat-uid-4"
              },
              "entityType": "user"
            },
            "for": {
              "entity": {
                "guid": "project-group",
                "icon": "https://assets.cometchat.io/sampleapp/v2/groups/cometchat-guid-1.webp",
                "name": "Project Group1",
                "type": "private",
                "owner": "cometchat-uid-4",
                "createdAt": 1630071341,
                "updatedAt": 1630305525,
                "updatedBy": "cometchat-uid-4",
                "description": "project related discussions between members",
                "membersCount": 4,
                "conversationId": "group_project-group"
              },
              "entityType": "group"
            }
          }
        },
        "sentAt": 1630305562,
        "updatedAt": 1630305562,
        "receipts": {
          "data": [
            []
          ]
        }
      },
      "conversationWith": {
        "guid": "project-group",
        "name": "Project Group1",
        "description": "project related discussions between members",
        "icon": "https://assets.cometchat.io/sampleapp/v2/groups/cometchat-guid-1.webp",
        "type": "private",
        "scope": "participant",
        "membersCount": 4,
        "joinedAt": 1630071782,
        "conversationId": "group_project-group",
        "hasJoined": true,
        "createdAt": 1630071341,
        "owner": "cometchat-uid-4",
        "updatedAt": 1630308875,
        "updatedBy": "cometchat-uid-4"
      }
    }
  ]
}