Could not post json signed data

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JSON

API

WebAPI

WebResponse

AES

I have to do an API request having AES algorithm with SHA256 with private key to sign payload data. While doing this i'm getting an exception
"The request was aborted: Could not create SSL/TLS secure channel."

In windows log it is showing that

An SSL 3.0 connection request was received from a remote client application, but none of the cipher suites supported by the client application are supported by the server. The TLS connection request has failed.

What I have tried:

ServicePointManager.Expect100Continue = true;
    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls | SecurityProtocolType.Ssl3;

    var httpWebRequest = (HttpWebRequest)WebRequest.Create("https://ipaddress/method/");
    httpWebRequest.ContentType = "application/json";

    httpWebRequest.Method = WebRequestMethods.Http.Post; //POST
    string resourePath = "test/123/balance/";
    string requestBody = "";
    string secretWord = "xxxx123";
    string header = "api-request-channelMid";

    string payLoadString = httpWebRequest.Method.ToString() + resourePath + requestBody + secretWord + header;
    byte[] payLoadBytes = Encoding.UTF8.GetBytes(payLoadString);

    RSAParameters publicKey;
    RSAParameters privateKey;

    RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(2048);
    rsa.PersistKeyInCsp = false;
    publicKey = rsa.ExportParameters(false);
    privateKey = rsa.ExportParameters(true);

    byte[] signature = rsa.SignData(payLoadBytes, "SHA256");
    string signedData = Convert.ToBase64String(signature);

    using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
    {
        var serializer = new JavaScriptSerializer();
        string json = "";

        httpWebRequest.Headers.Add("Signature", signedData);
        streamWriter.Write(json);
        streamWriter.Flush();
        streamWriter.Close();
    }

    ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls;

    var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
    using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
    {
        var result = streamReader.ReadToEnd();
    }