List ExternalExamSittings

{
    "data": [
        {
            "id": "FID001",
            "type": "ExternalExamSitting",
            "attributes": {
                "score": 0,
                "date": "string",
                "isPassed": true
            },
            "relationships": {
                "mock": {
                    "data": {
                        "id": "FID001",
                        "type": "CollectionMock"
                    }
                }
            }
        }
    ]
}