Code to get data from JJM..
https://github.com/ramSeraph/opendata/tree/master/jjm
The code is the way it is because it had to deal with the weird state management framework used by the site.
It mainly pulls habitation data from JJM. It can hopefully be used as a template to pull the data you are looking for.
This is late but I am going to leave the link here for anyone who comes looking.