Hlo everyone,
I have the graph entity structure as attached. You can see that i have something as pages and its value is a list right. Now i want to add a new structue as follows:-
vols:{'vol1_pages':[xxx]'}
is it possible to create like above desired style 
Not sure what the structure represents, but you can not store a map as a value for a property.
You could use apoc procedures to encode/decode it as a string, but this would be very efficient for searching.
You could store key:value vs pairs in related nodes.
Do you have a concrete example?
