using Pluralinput.Sdk;

...

// the InputManager initializes the SDK and should only be created once per application
var im = new InputManager();
// returns a list of all mouse devices
var mice = im.Devices.Mice;
// listen to the first mouse's button up event
mice.First().ButtonUp += (o, e) =>
{
    Console.WriteLine($"{o}: ButtonUp {e.Button}");
};