GetSummary - Obtain a summary of city statistics.

curl --request POST \
  --url https://api.f6o.co/v2/city/_statistics \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "inseeCodes": [
    "<string>"
  ]
}'

{
  "apiVersion": "<string>",
  "kind": "<string>",
  "context": "<string>",
  "internalDelay": 123,
  "data": [
    {
      "location": {
        "regionCode": "<string>",
        "departmentCode": "<string>",
        "label": "<string>",
        "irisCode": [
          "<string>"
        ]
      },
      "population": {
        "basedOn": "2023-11-07T05:31:56Z",
        "count": 123,
        "sinceLastYearChange": {
          "value": 123,
          "percentageValue": 123
        }
      }
    }
  ]
}