Compound Employee API – OData

I have updated an user(test_7658) information from SAP portal. Im trying to fetch the delta information of that user using ODATA Api in postman.

Below is my GET url:-

apisalesdemo8.successfactors.com/odata/v2/User?customPageSize=50&$expand=manager

Body:-

<query>

<queryString>

SELECT person, personal_information, employment_information, job_information

FROM CompoundEmployee

WHERE username=”test_7658″ AND last_modified_on > to_datetime (2022-01-01T00:00:00Z”)

</queryString>

<param>

<name>maxRows</name>

<value>50</value>

</param>

</query>

And the response received is for full list of 50 users and i couldnt find the changes done for the user (test_7658).

Please can you suggest a way to get a delta for this user.