{
    "eventSource": "aws:kafka",
    "eventSourceArn": "test_arn",
    "records": {
       "event.abacus.contract": [
            {
                "topic": "event.abacus.contract",
                "partition": 0,
                "offset": 15,
                "timestamp": 1545084650987,
                "timestampType": "CREATE_TIME",
                "key": "MQ==",
                "value": "ewogICAgImV2ZW50X3R5cGUiOiAiQ1JFQVRFIiwKICAgICJjb250cmFjdF9pZCI6IDEyMzQKfQ==",
                "headers": []
            }
        ]
    }
 }