Usage

{  "days": 0,  "from_date": "2019-08-24",  "through_date": "2019-08-24",  "total": 0,  "daily": [    {      "date": "2019-08-24",      "total": 0,      "surfaces": {        "voice": 0,        "batch": 0,        "text": 0      }    }  ],  "surfaces": [    {      "surface": "voice",      "cost": 0,      "percent": 0,      "requests": 0    }  ],  "models": [    {      "model": "string",      "surface": "voice",      "cost": 0,      "requests": 0,      "input_tokens": 0,      "output_tokens": 0,      "characters": 0,      "audio_seconds": 0    }  ]}