0x57376198?0x57376198 is the function selector for rescueTokens(address,uint256). Recovers tokens held by the contract.
When a transaction's data begins with 0x57376198, it is calling rescueTokens. The selector is the first four bytes of the keccak-256 hash of the signature rescueTokens(address,uint256), which is how wallets and explorers work out which function a payload is for.