Dictionary<string, string> dictionaryValue;
// Convert to json (you can make use of our Json service provider available in VoxelBusters.EssentialKit or use your own serializer)
IJsonServiceProvider serializer = new DefaultJsonServiceProvider();
string json = serializer.ToJson(dictionaryValue);
// Start saving it to cloud
CloudServices.SetString("dictionary-unique-key", json);
// Get the value of the above saved string value later
string stringValueFromCloud = CloudServices.GetString("string-unique-key");
// Convert the jsonString back to dictionary
IJsonServiceProvider serializer = new DefaultJsonServiceProvider();
object dictObject = serializer.FromJson(stringValueFromCloud);