Contents of a Google Cloud `CloudEvent`

CloudEvent

{
    'attributes': {
        'specversion': '1.0',
        'id': '{version_7_UUID}',
        'source': '//firestore.googleapis.com/projects/{project_id}/databases/(default)',
        'type': 'google.cloud.firestore.document.v1.{event_type}',
        'datacontenttype': 'application/protobuf',
        'dataschema': 'https://github.com/googleapis/google-cloudevents/blob/main/proto/google/events/cloud/firestore/v1/data.proto',
        'subject': 'documents/{path_id}',
        'time': '{timestamp_isoformat}',
        'location': '{region}',
        'database': '(default)',
        'namespace': '(default)',
        'document': '{path_id}',
        'project': '{project_id}'
    },
    'data': b'{data}'
}