UsageResponse

{
    "success": true,
    "data": {
        "todayMessages": 150,
        "monthMessages": 2500,
        "dailyLimit": 1000,
        "monthlyLimit": 30000,
        "remainingToday": 850,
        "remainingMonth": 27500,
        "usage": {
            "dailyUsagePercent": 15,
            "monthlyUsagePercent": 8
        }
    }
}