ApplyPnPUserProfileTemplateConsole.cs

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            AuthenticationManager authenticationManager = new AuthenticationManager();
            using (ClientContext clientContext = authenticationManager.GetSharePointOnlineAuthenticatedContextTenant("https://tenant-admin.sharepoint.com/", "userName", "password"))
            {
                var tenant = new Tenant(clientContext);

                ProvisioningHierarchy hierarchyToApply = LoadProvisioningHierarchyFromFile("C:\\PnP\\Templates\\TenantUserProfiletemplate.xml", null);

                tenant.ApplyTenantTemplate(hierarchyToApply, "SAMPLE-SEQUENCE");
            }
        }

        public static ProvisioningHierarchy LoadProvisioningHierarchyFromFile(string templatePath, ITemplateProviderExtension[] templateProviderExtensions)
        {
            // Prepare the File Connector
            string templateFileName = System.IO.Path.GetFileName(templatePath);

            // Prepare the template path
            var fileInfo = new FileInfo(templatePath);
            FileConnectorBase fileConnector = new FileSystemConnector(fileInfo.DirectoryName, "");

            // Load the provisioning template file
            var isOpenOfficeFile = false;

            XMLTemplateProvider provider;
            if (isOpenOfficeFile)
            {
                provider = new XMLOpenXMLTemplateProvider(new OpenXMLConnector(templateFileName, fileConnector));
                templateFileName = templateFileName.Substring(0, templateFileName.LastIndexOf(".", StringComparison.Ordinal)) + ".xml";

                var hierarchy = (provider as XMLOpenXMLTemplateProvider).GetHierarchy();
                if (hierarchy != null)
                {
                    hierarchy.Connector = provider.Connector;
                    return hierarchy;
                }
            }
            else
            {
                provider = new XMLFileSystemTemplateProvider(fileConnector.Parameters[FileConnectorBase.CONNECTIONSTRING] + "", "");
            }

            ProvisioningHierarchy provisioningHierarchy = provider.GetHierarchy(templateFileName);
            provisioningHierarchy.Connector = provider.Connector;
            // Return the result
            return provisioningHierarchy;
        }
    }
}