Get a product by reference

{
  "data": {
    "id": 0,
    "reference": "string",
    "name": "string",
    "description": "string",
    "vat_id": 0,
    "product_category_id": 0,
    "services": "string",
    "stock": 0,
    "rates": [
      {
        "id": 0,
        "sku": "string",
        "cost": 0,
        "price": 0,
        "primary": true
      }
    ],
    "category": {
      "id": 0,
      "name": "string",
      "reference": "string",
      "parent_id": 0,
      "has_products": true,
      "has_objectives": true,
      "children": [
        {
          "id": 0,
          "name": "string",
          "reference": "string",
          "parent_id": 0,
          "has_products": true,
          "has_objectives": true,
          "children": [],
          "created_at": "2019-08-24T14:15:22Z",
          "updated_at": "2019-08-24T14:15:22Z"
        }
      ],
      "created_at": "2019-08-24T14:15:22Z",
      "updated_at": "2019-08-24T14:15:22Z"
    },
    "created_at": "2019-08-24T14:15:22Z",
    "updated_at": "2019-08-24T14:15:22Z"
  }
}