Need to read data from json object which is server data at an interval of 1 sec...and then need to push 1min data(60 samples) into an array...is it possible using node red.
Yes it is.
Thereās a great page in the docs that will explain how to use the debug panel to find the right path to any data item.
https://nodered.org/docs/user-guide/messages
As for pushing to an array, you will likely need to store the array in context & retrieve it for adding new data. Read up on node-red context.
Or possibly the join node set to manually crest an array of 60 items.