How can I filter data in API using Last Modified Date?

I have been trying to filter data using last modified date, but I am not able to find any solution.

The URL I am trying to use is as follows:

https://test.manager.io/api2/customers?Timestamp>=‘2026-05-09T02:08:51Z’&fields=Name,EmailAddress,ControlAccount,BillingAddress,DeliveryAddress,Timestamp