```python
>>> lst = [1, 77, 'lol']
>>> client.add_json(lst)
'QmQ4R5cCUYBWiJpNL7mFe4LDrwD6qBr5Re17BoRAY9VNpd'
>>> client.get_json(_)
[1, 77, 'lol']
```
this example works for "lol", but not for "löl"