The SetRemoteUrlPlugin provides the ability to update the urlRemote of galleys(OJS) or publicationFormat(OMP), which is not supported by the formal API as off now.
For testing the function you have to copy this PlugIn in the 'generic'-Plugin section of your OJS or OMP installation. Activate the PlugIn at Site-Level in your browser and provide a token via settings, to secure your application.
Now test:
curl -k "https://<your ojs server>?publication_id=123&remote_url=<your DOI URI>&token=<token in Plugin settings>"
Visit result https://<your ojs server>/<journal which incl. publication_id=123>/api/v1/submissions
Search for urlRemote or <your DOI URI>
If you found a match, you're done.