Set the transaction fee per kB for this wallet. Overrides the global -paytxfee.
amountnumberREQUIREDcurl --user myuser --data-binary '{"jsonrpc":"1.0","id":"1","method":"settxfee","params":[0.00001]}' -H 'content-type:text/plain;' http://127.0.0.1:8332/true