Add an nrequired-to-sign multisignature address to the wallet. Each key is a bitcoin address or hex-encoded public key.
nrequirednumberREQUIREDkeysarrayREQUIREDlabelstringoptionaladdress_typestringoptionalcurl --user myuser --data-binary '{"jsonrpc":"1.0","id":"1","method":"addmultisigaddress","params":[2,["key1","key2"]]}' -H 'content-type:text/plain;' http://127.0.0.1:8332/{
"address": "3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy",
"redeemScript": "522103...52ae",
"descriptor": "sh(multi(2,...))"
}