$userEngage = new \Gc\UserEngage\UserEngage('API_KEY');
$userEngage->user()->create([
"first_name": "Amrit",
"last_name": "G.C"
"email": "myemail@example.org",
]);
$userEngage->user()->findByEmail('mytestemail@gmail.com');
$userEngage->user()->findByKey('7Q2VclcuKp7o');
$userEngage->user()->findById('123');
$userEngage->user()->findByPhoneNumber('9847463745');
$userEngage->user()->delete($userId);