--bip39 read a classic BIP39 seed and passphrase from the terminal instead of asking for lnd seed format or providing the --rootkey flag
-h, --help help for signoffer
--psbt string the base64 encoded PSBT that the other party sent as an offer to rescue funds
--rootkey string BIP32 HD root key of the wallet to use for signing the offer; leave empty to prompt for lnd 24 word aezeed
--walletdb string read the seed/master root key to use fro signing the offer from an lnd wallet.db file instead of asking for a seed or providing the --rootkey flag