curl --request POST \
  --url https://sandbox.4seletpay.com.br/api/v2/subscriptions/{id}/payment-method \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "payment": {
    "type": "card",
    "card": {
      "token": "9b2f5c8e-3a1d-4f7b-8c6e-2d9a1b4c5e6f"
    }
  }
}
'

{
  "id": "sub_4Hn8Qw2Rt6Yp1Zx3",
  "object": "subscription",
  "code": "plano-anual-123",
  "status": "incomplete",
  "currency": "brl",
  "description": "<string>",
  "interval": "day",
  "interval_count": 123,
  "billing_type": "prepaid",
  "amount": 123,
  "items": [
    {
      "code": "SKU-SUB",
      "description": "Assinatura",
      "quantity": 1,
      "amount": 10000
    }
  ],
  "discounts": [
    {
      "type": "fixed",
      "value": 1000,
      "invoice_number": 1
    }
  ],
  "increments": [
    {
      "type": "fixed",
      "value": 1000,
      "invoice_number": 1
    }
  ],
  "max_invoices": 123,
  "invoices_paid": 123,
  "minimum_price": 123,
  "payment_method": {
    "type": "card",
    "installments": 123,
    "card": {
      "token": "9b2f5c8e-3a1d-4f7b-8c6e-2d9a1b4c5e6f",
      "brand": "visa",
      "last_four": "1111",
      "holder_name": "João Silva"
    }
  },
  "statement_descriptor": "<string>",
  "start_at": "<string>",
  "next_billing_at": "<string>",
  "created_at": "<string>",
  "customer": {
    "name": "<string>",
    "email": "<string>"
  },
  "latest_invoice": {
    "id": "719305",
    "object": "invoice",
    "subscription": "sub_4Hn8Qw2Rt6Yp1Zx3",
    "number": 1,
    "status": "processing",
    "currency": "brl",
    "amount": 9000,
    "attempts": 123,
    "items": [
      {
        "code": "SKU-SUB",
        "description": "Assinatura",
        "quantity": 1,
        "amount": 10000
      }
    ],
    "discounts": [
      {
        "type": "fixed",
        "value": 1000,
        "invoice_number": 1
      }
    ],
    "increments": [
      {
        "type": "fixed",
        "value": 1000,
        "invoice_number": 1
      }
    ],
    "payments": [
      {
        "id": "cha_8Kq2Lm9XvB3nT7pZ",
        "object": "payment_intent",
        "status": "requires_action",
        "amount": 10000,
        "amount_refunded": 0,
        "currency": "brl",
        "payment_method_details": {
          "type": "card",
          "card": {
            "brand": "visa",
            "last_four": "1111",
            "holder_name": "João Silva"
          },
          "pix": {
            "qr_code": "00020126580014br.gov.bcb.pix0136a1b2c3d4-e5f6-7890-abcd-ef1234567890",
            "qr_code_url": "https://pix.exemplo.com.br/qr/cha_8Kq2Lm9XvB3nT7pZ",
            "expires_at": "2026-09-14T16:00:00.000000Z"
          }
        }
      }
    ],
    "next_action": {
      "type": "pix_display_qr_code",
      "pix": {
        "qr_code": "00020126580014br.gov.bcb.pix0136a1b2c3d4-e5f6-7890-abcd-ef1234567890",
        "qr_code_url": "https://pix.exemplo.com.br/qr/cha_8Kq2Lm9XvB3nT7pZ",
        "expires_at": "2026-09-14T16:00:00.000000Z"
      },
      "otp": {
        "confirmation_id": "5f1c2a9e-7b3d-4e8f-9a6c-1d2e3f4a5b6c",
        "expires_at": "2026-09-14T12:15:00.000000Z"
      }
    },
    "created_at": "<string>",
    "failure_reason": {
      "code": "card_declined",
      "message": "O cartão não possui saldo suficiente para concluir o pagamento.",
      "customer_message": "Não foi possível concluir o pagamento. Revise os dados informados ou tente outro meio de pagamento.",
      "merchant_message": "O pagamento não foi concluído. Oriente o comprador a revisar os dados informados ou tentar outro meio de pagamento."
    }
  },
  "metadata": {}
}