curl --request GET \
  --url https://api.{your-broker}.slate-labs.com/accounts/{login}/state

{
  "login": "<string>",
  "equity": 123,
  "pnl": 123,
  "free_margin": 123,
  "margin_level": 123,
  "margin_used": 123,
  "currency": "<string>",
  "balance": 0,
  "credit": 0,
  "gross_exposure": 0,
  "net_exposure": 0,
  "max_withdrawable": 0
}