I have a columns in a dataframe like this:

```
                               column_name
{"trials": {"value": ["8"]}, "results": {"value": "malfuction details."}, "trials_nic": {"value": ["7"]}, "custom_cii": {"value": ["yes"]}}

```

When I apply type to this column I get `"str"`

```
df['column_name'].apply(type)

```

output: `<class 'str'>`

How can I flat this column to get each `key:value` pair in a new column?