Converting a multi index dictionary output into Pandas dataframe

I need help in converting this data into pandas dataframe. Challenge here is data is in nested dictionary format and the no of elements present in every row changes on few cases.

    {'totalcount': 2,
         'appointments': [{'date': '11/01/2020',
           'cancelreasonname': 'CANCELLED FROM API',
           'appointmentid': '1179879',
           'patient': {'firstname': 'Pbtest',
            'primarydepartmentid': '1',
            'portaltermsonfile': 'false',
            'status': 'active',
            'lastname': 'Pbtest',
            'state': 'IL',
            'email': '[email protected]',
            'balances': [{'departmentlist': '1,21,102,145,148,150,157,162,166,168',
              'balance': 0,
              'providergroupid': '1',
              'cleanbalance': 'true'}],
            'city': 'CHICAGO',
            'race': [],
            'emailexists': 'true',
            'departmentid': '1',
            'confidentialitycode': 'N',
            'patientid': '18032',
            'registrationdate': '10/21/2020',
            'hasmobile': 'true',
            'address2': 'Pb',
            'privacyinformationverified': 'false',
            'zip': '12356',
            'consenttotext': 'false',
            'guarantoraddresssameaspatient': 'false',
            'address1': 'D91',
            'guarantorrelationshiptopatient': '1',
            'driverslicense': 'false',
            'patientphoto': 'false'},
           'starttime': '00:00',
           'cancelledby': 'API-16070',
           'departmentid': '1',
           'appointmentstatus': 'x',
           'scheduledby': 'API-16070',
           'cancelreasonnoshow': False,
           'patientid': '18032',
           'duration': 30,
           'templateappointmenttypeid': '4',
           'hl7providerid': 325,
           'lastmodifiedby': 'API-16070',
           'appointmentcopay': {'collectedforother': 0,
            'collectedforappointment': 0,
            'insurancecopay': 0},
           'cancelreasonid': '-5',
           'copay': 0,
           'cancelreasonslotavailable': True,
           'appointmenttypeid': '4',
           'lastmodified': '10/28/2020 08:56:00',
           'appointmenttype': 'PHYSICAL EXAM',
           'providerid': '325',
           'chargeentrynotrequired': False,
           'scheduleddatetime': '10/28/2020 08:54:55',
           'coordinatorenterprise': False,
           'templateappointmentid': '1179879',
           'cancelleddatetime': '10/28/2020 08:56:00',
           'appointmentnotes': [{'displayonschedule': False,
             'text': 'API appointment cancellation. Reported reason for cancellation: Cancelled appointment',
             'id': 47451}],
           'patientappointmenttypename': 'Physical Exam Visit'},
          {'date': '11/01/2020',
           'appointmentid': '1180694',
           'patient': {'firstname': 'Pbtest',
            'primarydepartmentid': '1',
            'portaltermsonfile': 'false',
            'status': 'active',
            'lastname': 'Pbtest',
            'state': 'IL',
            'email': '[email protected]',
            'balances': [{'balance': 0,
              'departmentlist': '1,21,102,145,148,150,157,162,166,168',
              'providergroupid': '1',
              'cleanbalance': 'true'}],
            'city': 'CHICAGO',
            'race': [],
            'emailexists': 'true',
            'departmentid': '1',
            'confidentialitycode': 'N',
            'patientid': '18032',
            'registrationdate': '10/21/2020',
            'hasmobile': 'true',
            'address2': 'Pb',
            'privacyinformationverified': 'false',
            'zip': '12356',
            'consenttotext': 'false',
            'countrycode3166': 'US',
            'guarantoraddresssameaspatient': 'false',
            'address1': 'D91',
            'guarantorrelationshiptopatient': '1',
            'driverslicense': 'false',
            'patientphoto': 'false'},
           'starttime': '00:00',
           'departmentid': '1',
           'appointmentstatus': 'f',
           'scheduledby': 'API-16070',
           'patientid': '18032',
           'duration': 30,
           'templateappointmenttypeid': '4',
           'hl7providerid': 325,
           'lastmodifiedby': 'API-16070',
           'appointmentcopay': {'collectedforother': 0,
            'collectedforappointment': 0,
            'insurancecopay': 0},
           'copay': 0,
           'appointmenttypeid': '4',
           'lastmodified': '10/29/2020 09:07:03',
           'appointmenttype': 'PHYSICAL EXAM',
           'providerid': '325',
           'chargeentrynotrequired': False,
           'scheduleddatetime': '10/29/2020 09:07:03',
           'coordinatorenterprise': False,
           'templateappointmentid': '1179879',
           'appointmentnotes': [{'displayonschedule': False,
             'text': 'Updated Note',
             'id': 47461}],
           'patientappointmenttypename': 'Physical Exam Visit'}]}