Register a URL to receive webhook event notifications.
API keys are prefixed ground_sandbox_ (sandbox) or ground_prod_ (production).
Pass the key as a Bearer token in the Authorization header.
HTTPS callback URL to receive webhook events. HTTP is allowed in sandbox only.
Event types to subscribe to.
portfolio_wallet.balance.updated, portfolio_wallet.deposit.status_changed, portfolio_wallet.withdrawal.status_changed, portfolio_wallet.withdrawal.payout.status_changed, portfolio_wallet.position.updated Optional human-readable description.