Retrieving a segment job result using API

HI All,

I am trying to test this 'Retrieving a segment job result using API' from this link - https://experienceleague.adobe.com/en/docs/experience-platform/segmentation/api/segment-jobs#retrieve-list

I see multiple query params for the API. One of then is SORT.
 

How is this Executed '[attributeName]:[desc]' ?. what is attribute name here? any attribute from the response?.

let say I want to sort by updateTime from the output as I wanted I latest Job details. Will that be '[updateTime]:[desc]' or '[children.updateTime]:[desc]'

Sample output without the sort functionality here/In link

Neither is working. 

Let me know the correct format to use. Thanks in advance