'string', 'app_param_data' => 'string', 'application' => 'Application', 'billing_period' => 'string', 'canceled_reason' => 'string', 'created_time' => 'datetime', 'currency' => 'string', 'id' => 'string', 'last_payment' => 'PaymentEnginePayment', 'next_bill_time' => 'datetime', 'next_period_amount' => 'string', 'next_period_currency' => 'string', 'next_period_product' => 'string', 'payment_status' => 'string', 'pending_cancel' => 'bool', 'period_start_time' => 'datetime', 'product' => 'string', 'status' => 'string', 'test' => 'unsigned int', 'trial_amount' => 'string', 'trial_currency' => 'string', 'trial_expiry_time' => 'datetime', 'updated_time' => 'datetime', 'user' => 'User', ); } }