Get service details with sub-services

{
    "success": true,
    "data": {
        "service": {
            "id": 1,
            "name": "Medical Check-up",
            "status": "active",
            "icon": "https://example.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBaEFCIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--1234567890abcdef/medical_checkup_icon.png",
            "created_at": "2025-12-01T10:00:00Z",
            "updated_at": "2025-12-07T11:30:00Z",
            "sub_services": [
                {
                    "id": 1,
                    "name": "Blood Test",
                    "status": "active",
                    "service_id": 1,
                    "icon": "https://example.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBaEFCIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--1111111111111111/blood_test_icon.png",
                    "created_at": "2025-12-01T10:30:00Z",
                    "updated_at": "2025-12-07T11:30:00Z"
                },
                {
                    "id": 2,
                    "name": "Urine Test",
                    "status": "active",
                    "service_id": 1,
                    "icon": "https://example.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBaEFCIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--2222222222222222/urine_test_icon.png",
                    "created_at": "2025-12-01T10:45:00Z",
                    "updated_at": "2025-12-07T11:30:00Z"
                },
                {
                    "id": 3,
                    "name": "X-Ray",
                    "status": "active",
                    "service_id": 1,
                    "icon": "https://example.com/rails/active_storage/blobs/redirect/eyJfcmFpbHMiOnsibWVzc2FnZSI6IkJBaHBBaEFCIiwiZXhwIjpudWxsLCJwdXIiOiJibG9iX2lkIn19--3333333333333333/xray_icon.png",
                    "created_at": "2025-12-01T11:00:00Z",
                    "updated_at": "2025-12-07T11:30:00Z"
                }
            ]
        }
    }
}