Liquidate

Liquidates a given subaccount using funds from another subaccount. This endpoint has a few limitations:
1. If succesful, the RPC will freeze the caller's subaccount until the bid is settled or is reverted on chain.
2. The caller's subaccount must not have any open orders.
3. The caller's subaccount must have enough withdrawable cash to cover the bid and the buffer margin requirements.
Required minimum session key permission level is admin