curl --request POST \
  --url https://api.livechatinc.com/v3.5/configuration/action/update_agent \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "id": "smith@example.com",
  "role": "viceowner",
  "groups": [
    {
      "id": 5,
      "priority": "first"
    },
    {
      "id": 2,
      "priority": "last"
    },
    {
      "id": 1,
      "priority": "normal"
    }
  ],
  "notifications": [
    "new_visitor",
    "new_goal",
    "visitor_is_typing"
  ],
  "email_subscriptions": [
    "weekly_summary"
  ]
}
'

import requests

url = "https://api.livechatinc.com/v3.5/configuration/action/update_agent"

payload = {
    "id": "smith@example.com",
    "role": "viceowner",
    "groups": [
        {
            "id": 5,
            "priority": "first"
        },
        {
            "id": 2,
            "priority": "last"
        },
        {
            "id": 1,
            "priority": "normal"
        }
    ],
    "notifications": ["new_visitor", "new_goal", "visitor_is_typing"],
    "email_subscriptions": ["weekly_summary"]
}
headers = {
    "Authorization": "Basic <encoded-value>",
    "Content-Type": "application/json"
}

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

print(response.text)

const options = {
  method: 'POST',
  headers: {Authorization: 'Basic <encoded-value>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    id: 'smith@example.com',
    role: 'viceowner',
    groups: [
      {id: 5, priority: 'first'},
      {id: 2, priority: 'last'},
      {id: 1, priority: 'normal'}
    ],
    notifications: ['new_visitor', 'new_goal', 'visitor_is_typing'],
    email_subscriptions: ['weekly_summary']
  })
};

fetch('https://api.livechatinc.com/v3.5/configuration/action/update_agent', 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.livechatinc.com/v3.5/configuration/action/update_agent",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'id' => 'smith@example.com',
    'role' => 'viceowner',
    'groups' => [
        [
                'id' => 5,
                'priority' => 'first'
        ],
        [
                'id' => 2,
                'priority' => 'last'
        ],
        [
                'id' => 1,
                'priority' => 'normal'
        ]
    ],
    'notifications' => [
        'new_visitor',
        'new_goal',
        'visitor_is_typing'
    ],
    'email_subscriptions' => [
        'weekly_summary'
    ]
  ]),
  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://api.livechatinc.com/v3.5/configuration/action/update_agent"

	payload := strings.NewReader("{\n  \"id\": \"smith@example.com\",\n  \"role\": \"viceowner\",\n  \"groups\": [\n    {\n      \"id\": 5,\n      \"priority\": \"first\"\n    },\n    {\n      \"id\": 2,\n      \"priority\": \"last\"\n    },\n    {\n      \"id\": 1,\n      \"priority\": \"normal\"\n    }\n  ],\n  \"notifications\": [\n    \"new_visitor\",\n    \"new_goal\",\n    \"visitor_is_typing\"\n  ],\n  \"email_subscriptions\": [\n    \"weekly_summary\"\n  ]\n}")

	req, _ := http.NewRequest("POST", 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.post("https://api.livechatinc.com/v3.5/configuration/action/update_agent")
  .header("Authorization", "Basic <encoded-value>")
  .header("Content-Type", "application/json")
  .body("{\n  \"id\": \"smith@example.com\",\n  \"role\": \"viceowner\",\n  \"groups\": [\n    {\n      \"id\": 5,\n      \"priority\": \"first\"\n    },\n    {\n      \"id\": 2,\n      \"priority\": \"last\"\n    },\n    {\n      \"id\": 1,\n      \"priority\": \"normal\"\n    }\n  ],\n  \"notifications\": [\n    \"new_visitor\",\n    \"new_goal\",\n    \"visitor_is_typing\"\n  ],\n  \"email_subscriptions\": [\n    \"weekly_summary\"\n  ]\n}")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.livechatinc.com/v3.5/configuration/action/update_agent")

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

request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Basic <encoded-value>'
request["Content-Type"] = 'application/json'
request.body = "{\n  \"id\": \"smith@example.com\",\n  \"role\": \"viceowner\",\n  \"groups\": [\n    {\n      \"id\": 5,\n      \"priority\": \"first\"\n    },\n    {\n      \"id\": 2,\n      \"priority\": \"last\"\n    },\n    {\n      \"id\": 1,\n      \"priority\": \"normal\"\n    }\n  ],\n  \"notifications\": [\n    \"new_visitor\",\n    \"new_goal\",\n    \"visitor_is_typing\"\n  ],\n  \"email_subscriptions\": [\n    \"weekly_summary\"\n  ]\n}"

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