/merchant_orders/:id

 curl -X GET \
  'https://api.mercadopago.com/merchant_orders/:id' \
  -H 'Authorization: Bearer ACCESS_TOKEN_ENV' 

 {
  "id": 9999999999,
  "status": "closed",
  "external_reference": "default",
  "preference_id": "Preference identification",
  "payments": [
    {
      "id": 9999999999,
      "transaction_amount": 1,
      "total_paid_amount": 1,
      "shipping_cost": 0,
      "currency_id": "[FAKER][CURRENCY][ACRONYM]",
      "status": "approved",
      "status_detail": "accredited",
      "operation_type": "regular_payment",
      "date_approved": "2019-04-02T14:35:35.000-04:00",
      "date_created": "2019-04-02T14:35:34.000-04:00",
      "last_modified": "2019-04-02T14:35:35.000-04:00",
      "amount_refunded": 0
    }
  ],
  "shipments": [
    {
      "id": 99999999999,
      "shipment_type": "shipping",
      "shipping_mode": "me2",
      "picking_type": null,
      "status": "delivered",
      "substatus": null,
      "items": [
        {
          "id": "not specified",
          "description": "shipment item description",
          "quantity": 1,
          "dimensions": "1.0x10.0x23.0,100.0",
          "dimensions_source": null
        }
      ],
      "date_created": "2019-04-02T14:20:46.000-04:00",
      "last_modified": "2019-04-12T15:36:48.000-04:00",
      "date_first_printed": "2019-04-02T14:35:40.000-04:00",
      "service_id": 999,
      "sender_id": 999999999,
      "receiver_id": 999999999,
      "receiver_address": {
        "id": 9999999999,
        "address_line": "address line",
        "city": {
          "id": null,
          "name": "City Name"
        },
        "state": {
          "id": "AR-X",
          "name": "state name"
        },
        "country": {
          "id": "AR",
          "name": "Argentina"
        },
        "latitude": "0.000000",
        "longitude": "0.000000",
        "comment": "shipment comment",
        "contact": "shipment contact",
        "phone": "9999999999",
        "zip_code": "9999",
        "street_name": "Street name",
        "street_number": "999",
        "floor": null,
        "apartment": null
      },
      "shipping_option": {
        "id": 999999999,
        "cost": 0,
        "currency_id": "[FAKER][CURRENCY][ACRONYM]",
        "shipping_method_id": 99999,
        "estimated_delivery": {
          "date": "2019-04-11T00:00:00.000-03:00",
          "time_from": null,
          "time_to": null
        },
        "name": "Normal a domicilio",
        "list_cost": 0,
        "speed": {
          "handling": 72,
          "shipping": 72
        }
      }
    }
  ],
  "collector": {
    "id": 999999999,
    "nickname": null
  },
  "marketplace": "NONE",
  "notification_url": null,
  "date_created": "2018-09-14T13:11:31.000-04:00",
  "last_updated": "2018-09-14T13:11:43.000-04:00",
  "sponsor_id": null,
  "shipping_cost": 0,
  "total_amount": 5,
  "site_id": "[FAKER][GLOBALIZE][SITE_ID]",
  "paid_amount": 5,
  "refunded_amount": 0,
  "payer": {
    "id": 999999999,
    "email": ""
  },
  "items": [
    {
      "id": "item id",
      "category_id": "item category",
      "currency_id": "[FAKER][CURRENCY][ACRONYM]",
      "description": "item description",
      "picture_url": "item picture url",
      "title": "item title",
      "quantity": 1,
      "unit_price": 5
    }
  ],
  "cancelled": false,
  "additional_info": "additional information",
  "application_id": 9999999999999999,
  "order_status": "paid"
}