curl --request GET \
  --url https://api.devic.ai/v1/tenant-usage/tiers \
  --header 'Authorization: Bearer <token>'

[
  {
    "tierId": "<string>",
    "name": "<string>",
    "description": "<string>",
    "rules": [
      {
        "subtenantId": "<string>",
        "windowEvery": 123,
        "limit": 123,
        "enabled": true
      }
    ],
    "excludedAssistants": [
      "<string>"
    ],
    "excludedAgents": [
      "<string>"
    ],
    "isDefault": true
  }
]