curl --request GET \
  --url 'https://{domain}/api/v2/network/aff-billing/invoices?api-key='

{
  "status": "success",
  "code": 200,
  "name": "OK",
  "message": "<string>",
  "info": {
    "invoices": [
      {
        "id": 123,
        "invoice_number": "<string>",
        "date": "<string>",
        "status": "<string>",
        "amount": {
          "value": "<string>",
          "currency": "<string>"
        },
        "referral_commission": {
          "value": "<string>",
          "currency": "<string>"
        },
        "period": "<string>",
        "attachment": "<string>",
        "internal_notes": "<string>",
        "affiliate": {
          "id": 123,
          "name": "<string>"
        },
        "payment_method": {
          "id": 123,
          "title": "<string>",
          "image": "<string>",
          "info": "<string>",
          "metadata": {
            "show_warning": true,
            "changed_at": 123,
            "changed_by": "<string>"
          }
        },
        "offers": [
          {
            "id": 123,
            "title": "<string>"
          }
        ],
        "goal_types": [
          {
            "id": 123,
            "title": "<string>"
          }
        ]
      }
    ]
  }
}