Export Destinations of a Product from a Country (Export Records, First Country Row)

{
  "type": "object",
  "required": [
    "hsCode",
    "countryOfOriginCode",
    "startDate",
    "endDate",
    "catalog",
    "pageNo",
    "pageSize"
  ],
  "properties": {
    "hsCode": {
      "type": "string",
      "pattern": "^[0-9]{4,10}$",
      "description": "The product's customs HS code, 4 or more digits."
    },
    "pageNo": {
      "enum": [
        1
      ],
      "type": "integer",
      "description": "The page number; only the first page (1) is offered."
    },
    "catalog": {
      "enum": [
        "exports"
      ],
      "type": "string",
      "description": "The records searched; only \"exports\" (export records), the one tested, is offered."
    },
    "endDate": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "End of the date window, YYYY-MM-DD."
    },
    "pageSize": {
      "enum": [
        1
      ],
      "type": "integer",
      "default": 1,
      "description": "Rows per page; only 1, the one tested, is offered."
    },
    "startDate": {
      "type": "string",
      "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
      "description": "Start of the date window, YYYY-MM-DD. The window may span at most three years."
    },
    "countryOfOriginCode": {
      "type": "string",
      "pattern": "^[A-Z]{3}$",
      "description": "The exporting (origin) country, as an ISO 3166 three-letter code."
    }
  },
  "additionalProperties": false
}

{
  "type": "object",
  "properties": {
    "total": {
      "type": "number",
      "description": "How many destination countries the matching export records go to."
    },
    "content": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "weight": {
            "type": "number",
            "description": "Total weight of the records, as recorded."
          },
          "quantity": {
            "type": "number",
            "description": "Total quantity of the records, as recorded."
          },
          "sumOfUSD": {
            "type": "number",
            "description": "Total value of the records, in USD."
          },
          "tradeCount": {
            "type": "number",
            "description": "Number of trade records."
          },
          "countryCode": {
            "type": "string",
            "description": "The destination country, as an ISO 3166 three-letter code."
          },
          "amountSharePct": {
            "type": "number",
            "description": "This destination's share of the total USD value, as a fraction of 1."
          },
          "weightAvgPrice": {
            "type": "number",
            "description": "Average USD value per unit of weight (USD value divided by weight)."
          },
          "quantityAvgPrice": {
            "type": "number",
            "description": "Average USD value per unit of quantity (USD value divided by quantity)."
          }
        }
      },
      "description": "The first destination row returned (at most one)."
    }
  },
  "description": "The destination roll-up: the count of destinations and the first row."
}