Hi, how do I output Json format after adding pageCursor in the URL?

Digi Remote Manager Web Services (API)
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“https://my.devicecloud.com/ws/DataPoint/deviceID!.json” is the first 1000 datapoint, and output is in json format.
However: “https://my.devicecloud.com/ws/DataPoint/deviceID!?pageCursor=5610189c-7ce5-11ea-8031-0a406a6369ba.json” results: GET DataPoint error. For input string: “0a406a6369ba.json”