appendMultisigTransactionSignature takes a multisig transaction blob, and appends a given raw signature to it.
This makes it possible to compile a multisig signature using only raw signatures from external methods.
Parameters
multisigTxnBlob: Uint8Array
an encoded multisig txn. Supports non-payment txn types.
appendMultisigTransactionSignature takes a multisig transaction blob, and appends a given raw signature to it. This makes it possible to compile a multisig signature using only raw signatures from external methods.