If you are using multiple servers change the host in <managerUri> to refer to your sync server.
For public events there are a few more options available when subscribing.
Process Locations and Contacts: This causes locations and contacts to be moved into x-properties "X-BEDEWORK-LOCATION" and "X-BEDEWORK-CONTACT". The receiving end (bedework) may carry out further actions to validate the location or contact and as a result may set a preexisting location or contact in the event. The x-property is always available for display but this process allows the system to validate the location/contact.
Process categories: This does the same for categories.