Get Questionnaire Instance

{
    "instance_id": "IVWKHAmTuKMpft2YOGvmw",
    "questionnaire_id": "Oy45QZZCQByX9Fm41IMxyw",
    "responder_id": "UBWI8fpmQRKifDN7OBooSw",
    "locale": "en-us",
    "valid_days": 30,
    "editable": true,
    "finalized": true,
    "question_ids": "string",
    "created_time": "2018-01-01T00:00:00+03:00",
    "updated_time": "2018-01-01T00:00:00+03:00",
    "sent_time": null,
    "delivered_time": null,
    "viewed_time": null,
    "submitted_time": null,
    "completed_time": null,
    "collection_url": "http://collection.e-satisfaction.com/questionnaire/desktop/IVWKHAmTuKMpft2YOGvmw"
}