sms.MonthlySegmentBreakdown

{
    "average_segments_per_message": 0,
    "campaign_message_segments": 0,
    "campaign_messages": 0,
    "credits": 0,
    "messages": 0,
    "month": "string",
    "segments": 0,
    "single_message_segments": 0,
    "single_messages": 0
}