get list of all specialists

{
    "code": 0,
    "data": [
        {
            "doctors": [
                {
                    "id": 0,
                    "name": "string",
                    "urlImage": "string"
                }
            ],
            "id": 0,
            "name": "string"
        }
    ],
    "message": "string"
}