Use json_normalize with extraneous dictionary layer with single key?
I have automated identification system (AIS) data as nested dictionaries in a pandas dataframe. Here is an example: dfAIS Out[18]: Message ... MetaData 0 {'ShipStaticData': {'AisVersion': 1, 'CallSign... ... {'MMSI': 255814000, 'MMSI_String': 255814000, ... 1 {'MultiSlotBinaryMessage': {'ApplicationID': {... ... {'MMSI':…