curl "https://ssl.newsman.app/api/1.2/rest/your_user_id/your_api_key/subscriber.update.json?subscriber_id=75002&$email=test%40example.com&firstname=john&lastname=doe"

<?php
 
require_once("Newsman/Client.php");
 
// you can get your API KEY, your newsman_user_id and list_id from My account -> API
$newsman_user_id = "your-user-id";
$api_key = "your-api-key";
$subscriber_id = 75002; // The ID of the subscriber
$email = "test@example.com"; // The email of the subscriber
$firstname = "john"; // The firstname of the subscriber
$lastname = "doe"; // The lastname of the subscriber
 
try {
	$client = new Newsman_Client($newsman_user_id, $api_key);
	$ret = $client->subscriber->update($subscriber_id, $email, $firstname, $lastname);
} catch (Exception $e) {
	//do something with the error, eg: log $e->getMessage()
}
 
return $ret;
 
?>

import newsman
 
user_id = "your_user_id"
api_key = "your_api_key"
subscriber_id = 75002
subscriber_email = "test@example.com"
firstname = "john"
lastname = "doe"
 
client = newsman.Newsman(user_id, api_key)
client.subscriber.update(subscriber_id, subscriber_email, firstname, lastname)

RESTClient client = new RESTClient("your_user_id", "your_api_key");
var _params = new NameValueCollection();
    _params["subscriber_id"] = 75002;
    _params["email"] = test@example.com;
    _params["firstname"] = "john";
    _params["lastname"] = "doe";
var response = client.CallMethod("subscriber", "update", _params);