curl --request GET \
  --url https://api.lava.so/v1/payment_methods \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "payment_method_id": "<string>",
      "last4": "4242",
      "expiry_month": "12",
      "expiry_year": "2027",
      "brand": "visa",
      "is_default": true,
      "has_error": true,
      "error_code": "<string>",
      "error_message": "<string>",
      "error_at": "<string>"
    }
  ]
}