{
"asset": "string",
"asset_custodian": "string",
"collateral_asset": "string",
"collateral_custodian": "string",
"collateral_type": "RESTRICTED",
"counterparty_id": "string",
"liquidation_percent": "string",
"margin_call_percent": "string",
"quantity": "string",
"rate": 0,
"requirement_percent": 0,
"side": "LEND"
}