MC
[Serializable]
class Data {
public Vector3 vecPosition;
}
[MenuItem("Test/Test", false, 010)]
public static void Testing() {
var json = "{'vecPosition':{'x':0.0,'y':0.0,'z':31.1672153}}";
var data = JsonUtility.FromJson<Data>(json.Replace('\'', '\"'));
Debug.LogFormat("Result: {0}", data.vecPosition);
}

