I think its possible but since its not documented it might be change in the future...
using the previous call you will get the properties details including the properties id
next use PUT method and update the value.
e.g
using GET method I retrieve my property details:
{"list":[{"name":"HotDeploy?","value":{"id":"4180","type":"STRING","original":false,"arrayValue":[],"simpleValue":"True"},"id":"465","defaultProperty":false}]}
In order to update use PUT method with the following payload (note that now URL will include the property id)
...datamanagement/a/releasecandidates/18/properties/465
Payload