data = {
    # 指令类型
    "cmdid": 1001,  # 执行行驶任务
    # 指令参数
    "param": {
        # 导航数据
        "navigation": [
            {
                'type': 'forward',  # 方向类型 forward 正向 backward 反向
                'nav_coordinates': [
                    # 直行轨迹坐标参数
                    {
                        "start_point_x": 37.7749,
                        "start_point_x": 37.7749,
                        "end_point_x": 40,
                        "end_point_y": -120
                    },
                    # 转弯轨迹坐标参数
                    {
                        "start_point_x": 40.7128,
                        "start_point_y": -74.0060,
                        "center_point_x": 10,
                        "center_point_y": 20,
                        "end_point_x": 50.7128,
                        "end_point_y": -70.0060
                    },
                ]
            },
            {
                'type': 'backward',
                'nav_coordinates': [
                    # 直行轨迹坐标参数
                    {
                        "start_point_x": 37.7749,
                        "start_point_y": 37.7749,
                        "end_point_x": 40,
                        "end_point_y": -120
                    },
                    # 转弯轨迹坐标参数
                    {
                        "start_point_x": 40.7128,
                        "start_point_y": -74.0060,
                        "center_point_x": 10,
                        "center_point_y": 20,
                        "end_point_x": 50.7128,
                        "end_point_y": -70.0060
                    },
                ]
            },
        ],
    },
}