curl --request GET \
  --url https://api.messari.io/metrics/v1/exchanges \
  --header 'X-Messari-API-Key: <api-key>'

{
  "data": [
    {
      "country": "<string>",
      "globalRank30D": 123,
      "id": "<string>",
      "metrics": {
        "assetsCount": 123,
        "marketsCount": 123,
        "trades24Hour": 123,
        "volume24Hour": 123
      },
      "name": "<string>",
      "region": "<string>",
      "relatedExchangeIDs": [
        "<string>"
      ],
      "slug": "<string>",
      "type": "<string>",
      "typeRank30D": 123,
      "yearEstablished": 123
    }
  ],
  "error": "<string>",
  "metadata": {
    "page": 123,
    "pageSize": 123,
    "totalPages": 123,
    "totalRows": 123
  }
}