curl --request GET \
  --url https://enterprise-api.writer.com/billing/subscription \
  --header 'Authorization: <authorization>'

{
  "subscriptionId": "<string>",
  "meta": {
    "teamCount": 123,
    "termsCount": 123,
    "snippetsCount": 123,
    "ssoAccess": true,
    "reporting": {},
    "portal": {},
    "styleguide": {},
    "tier": "enterprise-1"
  },
  "createdAt": "2023-11-07T05:31:56Z",
  "seats": 123,
  "productName": "free",
  "status": "trialing",
  "usage": {
    "team": {
      "value": 123,
      "limit": 123
    },
    "user": {
      "value": 123,
      "limit": 123
    },
    "words": {
      "value": 123,
      "limit": 123
    },
    "coWriteWords": {
      "value": 123,
      "limit": 123
    }
  }
}