how to remanage node via curl/rest api?

i've figured out how to unmanage a node via curl, eg:

curl -k -u userid:password -v https://orion:17778/SolarWinds/InformationService/v3/Json/Invoke/Orion.Nodes/Unmanage -X POST -d '["N:2670","03-21-2019","01-01-2020","false"]' -H "Content-Type: application/json"

but when i do the same for a remanage :

curl -k -u userid:password -v https://orion:17778/SolarWinds/rmationService/v3/Json/Invoke/Orion.Nodes/Remanage -X POST -d '["N:2670"]' -H "Content-Type: application/json"

it fails with the error message:

HTTP Error 404. The requested resource is not found.

what am i doing wrong?