How do I fetch specific data from api (orderbook)?

Hi, I want to make an orderbook in my app. How can i fetch data form this api: https://www.bitstamp.net/api/order_book/
I want to make 2 columns, like in api 1 for price and 2 for quantity.
I did this for the price:
image
but api looks different:
https://www.bitstamp.net/api/v2/ticker/btcusd/
Does any one know how to fetch specific data from list (first link)?

You can use the walking dictionary blocks to return the data you require.