Need help on Test Executions based on Cycle Zephyr Squad Cloud API

The API documentation for these two end points is terrible.

https://zephyrsquad.docs.apiary.io/#reference/execution/get-list-of-executions-by-cycle/get-list-of-

... vs.

https://zephyrsquad.docs.apiary.io/#reference/execution/get-list-of-executions-by-cycle-v2/get-list-...
Specifically, there is no information provided for the following parameters: - expand "expand of Execution" String - sortOrder "sortOrder of Execution" String - action "action of Execution" String - sortBy "sortBy of Execution" String Can anyone refer me to something with more information? I'm specifically wondering about expand and action.

This is the URL I am hitting:
https://prod-api.zephyr4jiracloud.com/connect/public/rest/api/2.0/executions/search/cycle/f17f69af-02fc-4cdc-863a-bdbd4fa5a66b?versionId=16729&projectId=10087
I have even given necessary headers like Zapi access key and jwt token. Still unable to authenticate.

MartiLobos anupdamodaran pls help!
Screenshot attached.
Pls note: My JWT token generation is working fine for other API endpoints but only for the above API its not working.

Also I am unable to generate JWT sepcifically for the above API even after providing versionId, ProjectId,CycleID correctly. 
I need resolution on this urgently.