Get device task list

{
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    "message": "",
    "data": {
        "pagination": {
            "page": 0,
            "page_size": 0,
            "total": 0
        },
        "list": [
            {
                "id": "string",
                "task_name": "string",
                "group_id": "string",
                "code": 0,
                "create_time": 0,
                "created_nickname": "string",
                "start_time": 0,
                "status": 0,
                "update_time": 0,
                "end_time": 0,
                "estimate_time": 0,
                "remark": "string",
                "sn": "string",
                "current_action_id": "string",
                "current_stage_id": "string",
                "elements": [
                    {
                        "id": "string",
                        "name": "string",
                        "relation_type": "string"
                    }
                ],
                "missions": [
                    {
                        "mission_id": "string",
                        "mission_name": "string",
                        "estimate_time": 0,
                        "origin_mission_id": "string",
                        "total_estimate_time": 0
                    }
                ],
                "stages": [
                    {
                        "stage_id": "string",
                        "total_estimate_time": 0,
                        "actions": [
                            {
                                "action_id": "string",
                                "action_type": 0,
                                "code": 0,
                                "estimate_time": 0,
                                "start_time": 0,
                                "finish_time": 0,
                                "progress": {},
                                "status": 0,
                                "seq": 0,
                                "gateway_sn": "string",
                                "operated_nickname": 0
                            }
                        ]
                    }
                ]
            }
        ]
    }
}