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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _read_dict(self, dictionary):
 """Import a JSON dict into this DDO."""

        values = dictionary
        self._did = values['id']
        self._created = values.get('created', None)
        if 'publicKey' in values:
            self._public_keys = []
            for value in values['publicKey']:
                if isinstance(value, str):
                    value = json.loads(value)
                self._public_keys.append(DDO.create_public_key_from_json(value))
        if 'authentication' in values:
            self._authentications = []
            for value in values['authentication']:
                if isinstance(value, str):
                    value = json.loads(value)
                self._authentications.append(DDO.create_authentication_from_json(value))
        if 'service' in values:
            self._services = []
            for value in values['service']:
                if isinstance(value, str):
                    value = json.loads(value)
                service = Service.from_json(value)
                service.set_did(self._did)
                self._services.append(service)
        if 'proof' in values:
            self._proof = values['proof']