Service Desk API - Error - Unable to parse the JSON

Hi Team,

Im getting an error while querying the API - /api/v3/requests

any help is appreciated --

Error Details : --

{
    "response_status": {
        "status_code": 4000,
        "messages": [
            {
                "status_code": 4001,
                "field": "input_data",
                "type": "failed",
                "message": "Unable to parse the JSON"
            }
        ],
        "status": "failed"
    }
}