The String - JSON filter Task lets you perform JSON queries with the JSONPath and the JQ engine against a JSON file or value/Variable.
JQ filter manual: https://stedolan.github.io/jq/manual/
Credentials
To control a remote computer you may need to use a Credential. The Credential must match the user name and password of the user that you want to login for. Select a Credential in the combo box or click the Settings icon to open Manage credentials in order to add or edit Credentials.
File
Click the File radio button to enter a full file path to a JSON file. Click the File icon to browse for a JSON file.
Variable/Value
Enter Variable or value as input string. Click the Settings icon to to browse for Variables.
JSON filter engine
Select JSONPath or JQ program as a “filter”: it takes an input, and produces an output.
Filter expression
Enter the JSONPath or JQ filter expression. Click the Filter expression icon to browse the input stream structure.