curl --request GET \
  --url https://api.devic.ai/v1/tenants/{tenantId}/stats \
  --header 'Authorization: Bearer <token>'

{
  "byAssistant": [
    {
      "assistantIdentifier": "<string>",
      "chats": 123
    }
  ],
  "byAgent": [
    {
      "agentId": "<string>",
      "threads": 123
    }
  ],
  "totals": {
    "chats": 123,
    "threads": 123
  }
}