How to parse large JSON in node-mcu using json-streaming-parser?

I am trying to parse a large JSON from thing-speak Link . I just want to read values from "Field1". I have tried parsing Json in nodemcu but unable to parse all values due to memory problem.. So i found an alternate i.e using Json Streaming Parser Library link . There is an example too in this library but i cant get anything out of it. So please help me with this library.

I use Arduino JSON. While I have not implemented it's Parse from Stream functionality yet, it is well documented.