curl --request GET \
  --url https://api-message.nativehub.live/api/v1/analytics/billing-summary \
  --header 'Authorization: Bearer <token>'

{
  "total_revenue": 6271.5,
  "total_cost": 3756.9,
  "total_margin": 2514.6,
  "by_currency": [
    {
      "currency": "USD",
      "revenue": 6271.5,
      "cost": 3756.9
    }
  ]
}