When data is saved in StrategicERP using a token, you will receive two types of responses:

Format 1 (Default): 

<span id="retrievejavascript">window.setTimeout("retrievefieldvalues('1');",500);</span>

Format 2 (using additional request as &api=REST):

Thanks for the information. We will revert asap. Reference:1

Above responses can be converted into JSON format using additional request &type=json