RESTAPI support for getting testcase data from specific folder under any project.

I am using Zephyr plugin in jira server for test case management. I have multiple projects containing huge number of test cases. Project contains multiple subfolders. I want to export the test cases using RESTAPI  by selecting some specific subfolders under the project. I wanted to know if we can get the JSON data by  selecting any specific folder under a project. Any help on this topic is highly appreciated.