private static T SerializeJsonToObject<string,T>(string jsonObjectRepresentationsToDeserialize, T typeToDeserializeTo)
    {
        T serializedTypeFromJson = _jsonSerializer.Deserialize(jsonObjectRepresentationsToDeserialize, typeToDeserializeTo);

        return serializedTypeFromJson;
    }

private static T SerializeJsonToObject<T>(string jsonObjectRepresentationsToDeserialize)
{
    return _jsonSerializer.Deserialize<T>(jsonObjectRepresentationsToDeserialize);
}

MyObject obj = SerializeJsonToObject<MyObject>("json object");