Base64-encoded client-signed VersionedTransaction containing the
create_escrow (+ optional leading create_user) instruction(s). Built
server-side and returned (all-signatures-zeroed) by the create-quote call;
the sender adds their signature before accepting the quote via
/v1/escrow-transfers/{id}/accept.
Base64-encoded client-signed VersionedTransaction containing the
create_escrow(+ optional leadingcreate_user) instruction(s). Built server-side and returned (all-signatures-zeroed) by the create-quote call; the sender adds their signature before accepting the quote via/v1/escrow-transfers/{id}/accept.