curl --request GET \
  --url https://api.copper.co/platform/portfolios

{
  "portfolios": [
    {
      "createdAt": "1617235200000",
      "createdBy": "<string>",
      "extra": {
        "baseCurrency": "<string>",
        "clearLoopDelegationsBlocked": true,
        "clearLoopPortfolioId": "<string>",
        "clearLoopUnDelegationsBlocked": true,
        "clientAccountId": "<string>",
        "customerId": "<string>",
        "exchange": "okex",
        "externalAccountId": "<string>",
        "parentPortfolioId": "<string>",
        "quoteCurrency": "<string>",
        "showWalletBalance": "real",
        "usdWithdrawalLimit": "<string>"
      },
      "isActive": true,
      "organizationId": "1fa95ae7-5f74-4258-a4c6-687b39d7941d",
      "portfolioDescription": "My portfolio description",
      "portfolioId": "<string>",
      "portfolioName": "My portfolio",
      "portfolioType": "custody",
      "status": "active",
      "updatedAt": "1617235200000",
      "updatedBy": "<string>"
    }
  ]
}