Using a model other than User with Cashier

Hi,

I was reading through the messages here and I understand that Cashier can be configured to use a different model other than User.

I have an Organization model that I would like to use with Cashier instead. I have changed user_id in the subscription table to organization_id.

Schema::create('subscriptions', function ($table) {
    $table->increments('id');
    $table->integer('organization_id');
    $table->string('name');
    $table->string('stripe_id');
    $table->string('stripe_plan');
    $table->integer('quantity');
    $table->timestamp('trial_ends_at')->nullable();
    $table->timestamp('ends_at')->nullable();
    $table->timestamps();
});

I've also updated the services.php file.

    'stripe' => [
        'model'  => app\Organization::class,
        'secret' => env('STRIPE_API_SECRET'),
        'key'   => env('STRIPE_API_PUBLISHABLE'),
    ],

I'm not sure where to go from there.