curl --request GET \
  --url https://api.example.com/v1/invoices/customers/{id} \
  --header 'Authorization: Bearer <token>'

{
  "customer_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "total_invoices": 123,
  "total_amount": 123,
  "currency_breakdown": {},
  "invoices": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "invoice_number": "<string>",
      "customer_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "currency": "<string>",
      "total": 123,
      "due_date": "2023-11-07T05:31:56Z",
      "created_at": "2023-11-07T05:31:56Z"
    }
  ]
}