Get Balance

curl --request GET \
  --url https://api.example.com/v1/account/balance \
  --header 'X-API-Key: <x-api-key>'

{
  "balance": "<string>",
  "currency": "<string>",
  "unrealized_pnl": "<string>",
  "total_value": "<string>",
  "starting_balance": "<string>"
}