post https://data-api.foursquare.com/v1/maps//copy
Creates a copy of an existing map, duplicating its layers and map state. Copy a map to create a snapshot of an existing project, build a "branch" of a project, or a template from which to start a new visualization. You must choose whether to clone the target map's datasets (copy_datasets = True) or point to them as a data source (copy_datasets = False) for the cloned map.