Create Sales Invoice Notification Rule

var options = new RestClientOptions("https://apitest.nilvera.com")
{
  MaxTimeout = -1,
};
var client = new RestClient(options);
var request = new RestRequest("/einvoice/Notification/Sale", Method.Post);
request.AddHeader("Content-Type", "application/json");
request.AddHeader("Authorization", "Bearer <API KEY>");
var body ={"NotificationDto": {"ID": 0,"RuleName": "string","Rules": [{"Property": "DocumentProfile","Operator": "GreaterOrEqual",
"ValueFirst":"string",
"ValueSecond":"string"}],
"Contact":[{ "NotificationValue":"string",
"NotificationValueType":"Whatsapp"}],
"IsActive":true"}};
request.AddStringBody(body, DataFormat.Json);
RestResponse response = await client.ExecuteAsync(request);
Console.WriteLine(response.Content);