REST call for rebalance, examples does not work

The docs use this syntax,
curl -v -X POST -u Administrator:password \
'http://192.168.0.77:8091/controller/rebalance'\
-d 'knownNodes=ns_1@192.168.0.77,ns_1@192.168.0.56'

This gives an error with 4.6.5 and higher. The rest API call in the console looks like this.

curl -v -X POST -u Administrator:password \
'http://192.168.0.77:8091/controller/rebalance'\
-d 'ejectedNodes=&knownNodes=ns_1@192.168.0.77,ns_1@192.168.0.56'

Reporter: Timothy Wong
E-mail: tim.wong@couchbase.com