Events can be tracked using the pa.track() JavaScript function.
                
                
                    The pa.track() function accepts an object as the argument.
                    The object must contain a key named name.
                
                
                    Additionally, value and unit keys can be included to be tracked.
                
pa.track({name: 'Subscription'})
pa.track({name: 'Payment', value: 5, unit: 'USD'})