using Auth0.ManagementApi;
using System.Threading.Tasks;
using Auth0.ManagementApi.Guardian;

public partial class Examples
{
    public async Task Example() {
        var client = new ManagementClient(
            token: "<token>"
        );

        await client.Guardian.Factors.SetAsync(
            name: GuardianFactorNameEnum.PushNotification,
            request: new SetGuardianFactorRequestContent {
                Enabled = true
            }
        );
    }

}

{
  "enabled": true
}