# Action Step - JSON Operation
JSON is also a type of variable. It is used to store and manage a series of variables including normal varialbe and JSON variable.
For example, this is a JSON storing a customer's detail:
Check this tutorial video (opens new window) about how to write JSON variable.
The "JSON Operation" is sitting in the "Basic Actions" list of the Action step.
Various examples have been already embedded in the operation. Select an operation and use the "Examples" button to explore it!
For example, how to insert an item to a JSON variable: