Exception: Using array_key_exists() on objects is deprecated in PHP 7.4

✅ Prerequisites

[X] Did you perform a cursory search of open issues? Is this bug already reported elsewhere?
[X] Are you running the latest SDK version?
[x] Are you reporting to the correct repository (magic-admin-php)?

🐛 Description

/lib/Resource/Token.php:26 throws an exception in PHP 7.4:

ErrorException: array_key_exists(): Using array_key_exists() on objects is deprecated. Use isset() or property_exists() instead

Using array_key_exists() on objects is deprecated in PHP 7.4.

🧩 Steps to Reproduce

composer require magiclabs/magic-admin-php
(Get $did_token from client)
$magic = new \MagicAdmin\Magic(env('MAGIC_SECRET'));
$magic->token->validate($did_token); or $issuer = $magic->token->get_issuer($did_token);

🤔 Expected behavior

Validate or get issuer from the DID token

😮 Actual behavior

ErrorException: array_key_exists(): Using array_key_exists() on objects is deprecated. Use isset() or property_exists() instead

/.../vendor/magiclabs/magic-admin-php/lib/Resource/Token.php:26
/.../vendor/magiclabs/magic-admin-php/lib/Resource/Token.php:66
/.../vendor/magiclabs/magic-admin-php/lib/Resource/Token.php:73

💻 Code Sample

$magic = new \MagicAdmin\Magic(env('MAGIC_SECRET_KEY'));
try {
    $magic->token->validate($did_token);
    $issuer = $magic->token->get_issuer($did_token);
} catch (\MagicAdmin\Exception\DIDTokenException $e) {
    dd($e->getErrorMessage());
}

🌎 Environment

Software	Version(s)
`magic-admin-php`	0.1.0
`php`	7.4.12
Operating System	macOS 10.15.7

magiclabs / magic-admin-php

Exception: Using array_key_exists() on objects is deprecated in PHP 7.4 #6