jwt-sample-php

jwt.php

// Using JWT from PHP requires you to first either install the JWT PEAR package from
// http://pear.php.net/pepr/pepr-proposal-show.php?id=688 or get the JWT project
// from https://github.com/firebase/php-jwt on GitHub.
// mobile app initializes zendesk sdk and passes NS user id to zendesk 
// NS api webhook would be below (assuming php) 

<?php
include_once "Authentication/JWT.php";
// Log your user in.
$key       = "{my zendesk shared key}";
$subdomain = "{my zendesk subdomain}";
$now       = time();
$token = array(
  "jti"   => md5($now . rand()),
  "iat"   => $now,
  "name"  => $user->name,
  "email" => $user->email
);
$jwt = JWT::encode($token, $key);
echo json_encode(["token" => $jwt]);	
?>

Change this line echo json_encode([“token”: $jwt]); to

echo json_encode(["token" => $jwt]);