curl --request GET \
  --url https://api.getlago.com/api/v1/customers/{external_customer_id}/payment_methods \
  --header 'Authorization: Bearer <token>'

{
  "payment_methods": [
    {
      "lago_id": "4cf085a7-c196-4f07-a543-97c50ec6e8b2",
      "is_default": true,
      "payment_provider_type": "stripe",
      "provider_method_id": "pm_1N8ZQX2eZvKYlo2CkL9Y8XYZ",
      "created_at": "2025-01-21T00:10:29Z",
      "payment_provider_code": "stripe_prod",
      "payment_provider_name": "Stripe"
    }
  ],
  "meta": {
    "current_page": 2,
    "total_pages": 4,
    "total_count": 70,
    "next_page": 3,
    "prev_page": 1
  }
}