Python: json normalize "String indices must be integers" error
According to pandas documentation, for data argument of the method json_normalize :
data : dict or list of dicts Unserialized JSON objects
In above, pd.read_json returns dataframe.So, you can try converting dataframe to dictionary using .to_dict(). There are various options for using to_dict() as well.
May be something like below:
json_normalize(full_json_df.to_dict(), ......)