Method ITLedgerKeys

using System.Net;
using Newtonsoft.Json.Linq;

public void MethodName(parms){

    string uri = "https://fusion.superion.com/FusionOSServices/v0/ONESolution/IntelliTime/Keys";
    

    using (WebClient wc = new WebClient())
    {
        wc.Headers.Add("Content-Type", "application/json");
        // Replace "ID" with supplied AppID
        wc.Headers.Set("X-APPID", "ID");
        // Replace "KEY" with supplied AppKey
        wc.Headers.Set("X-APPKEY", "KEY");

        while (uri != null)
        {
            string result = wc.DownloadString(uri);

            var response = JObject.Parse(result);

            var keys = (JContainer)response["RequestResponse"]["DATA"]["KEYS"];

            foreach (var key in keys )
            {
                // Your code goes here
            }
            
            // responses with more then 1000 keys are broken up into multiple requests
            uri = (string)response["RequestResponse"]["NextUri"];
        }
    }
}

                        
            {
                "RequestResponse": {
                "Count": "2",
                "DATA": {
                    "KEYS": [
                        {
                        "TYPE": "GL",
                        "LEDGER": "A7",
                        "KEY": "0000000000",
                        "MEDIUMDESC": "All Zeros",
                        "LONGDESC": "All Zeros",
                        "STATUS": "A",
                        "ACCEPTTRANSACTIONS": "Y",
                        "STARTDATE": "12/27/2017 12:00:00 AM",
                        "ENDDATE": ""
                        },
                        {
                        "TYPE": "GL",
                        "LEDGER": "GL",
                        "KEY": "0000012",
                        "MEDIUMDESC": "TestKey",
                        "LONGDESC": "TestKey",
                        "STATUS": "A",
                        "ACCEPTTRANSACTIONS": "Y",
                        "STARTDATE": "",
                        "ENDDATE": ""
                        }
                    ]
                    }
                }
            }