Fetch all users having some sales order.

Hi,
I am trying to fetch all the users having sales order. How to do that? I have tried by the following URL:

https://crm.zoho.com/crm/private/json/SalesOrders/getSearchRecords?authtoken=auth key&newFormat=1&selectColumns=All&searchCondition=(Status|contains|*Waiting On Payment*)

Thanks in advance.