...

# Create a StorageBacking instance on a local file system.
my $library_backing = new
   Com::Vmware::Content::Library::StorageBacking();
$library_backing->set_type('type' =>
   Com::Vmware::Content::Library::StorageBacking::Type::OTHER);
$library_backing->set_storage_uri('storage_uri' => 'file:///mnt/nfs/cls-root');

# Create a new SubscriptionInfo object to describe the subscription behavior.
my $subscription_info = new
   Com::Vmware::Content::Library::SubscriptionInfo();
$subscription_info->set_authentication_method('authentication_method' =>
Com::Vmware::Content::Library::SubscriptionInfo::AuthenticationMethod::BASIC);
$subscription_info->set_user_name('user_name' => 'library-user');
$subscription_info->set_password('password' => 'password');
$subscription_info->set_subscription_url('subscription_url' =>
   'https://www.example.com/library_inventory/lib.json');
$subscription_info->set_automatic_sync_enabled('automatic_sync_enabled' => 1);
$subscription_info->set_ssl_thumbprint('ssl_thumbprint' =>
   '98:00:3F:C4:4E:B1:F3:F9:0D:70:47:48:E7:08:D1:A7:0E:DE:60:A5');

# Create a new LibraryModel object for the subscribed library.
my $library_model = new
   Com::Vmware::Content::LibraryModel();
$library_model->set_type('type' =>
   Com::Vmware::Content::LibraryModel::LibraryType::SUBSCRIBED);
$library_model->set_name('name' => 'subscrLibrary');

# Attach the storage backing and the subscription info to the library model.
$library_model->set_storage_backings('storage_backings' => [$library_backing]);
$library_model->set_subscription_info('subscription_info' => $subscription_info);

# Create the new library instance.
my $subscription_token = ContentLibrary::Helpers::ClsApiHelper::generate_uuid();
my $my_library_id = $subscribed_library_service->create(
                    'client_token' => $subscription_token,
                    'create_spec'  => $library_model
);