Hi Kelly,
Sorry for the inconvenience caused.
Based on your requirement we suggest you to use a Custom Adaptor extending from ODataV4. So, we can override the processResponse method of the adaptor which process the data once request succeeded. Please refer the below documentation link for more information.
To interrupt, the requests for manual calls like executeQuery method of the DataManager, we suggest you to bind the optional methods for success or failure along with the executeQuery method. Please refer the below documentation link for more information.
Please let us know, if you need further assistance.
Regards,
Manivel