private string AddQueryParametersToEndpoint()
{
var endpointBuilder = new StringBuilder(_endpoint + "?");
if (_queryParams != null)
{
foreach (var param in _queryParams)
{
endpointBuilder.Append($"{param.Key}={param.Value}&");
}
}
endpointBuilder.Append($"timestamp={GetTimestamp()}&nonce={CryptoEngine.GenerateNonce()}");
return(endpointBuilder.ToString());
}