I have a python dictionary in this format:

```
{('first', 'negative'): 57, ('first', 'neutral'): 366, ('first', 'positive'): 249, ('second', 'negative'): 72, ('second', 'neutral'): 158, ('second', 'positive'): 99, ('third', 'negative'): 156, ('third', 'neutral'): 348, ('third', 'positive'): 270}

```

I want to convert it to:

```
{'first': [{'sentiment':'negative', 'value': 57}, {'sentiment': 'neutral', 'value': 366}, {'sentiment': 'positive', 'value': 249}], 'second': [{'sentiment':'negative', 'value': 72}, {'sentiment': 'neutral', 'value': 158}, {'sentiment': 'positive', 'value': 99}], 'third': [{'sentiment':'negative', 'value': 156}, {'sentiment': 'neutral', 'value': 348}, {'sentiment': 'positive', 'value': 270}]}

```

Thanks in advance