A simulation must belong to a project and use a model.
Flow to create a simulation (new project, new model)
Flow to create a simulation (existing project, new model)
Upload files to File Server
To upload a file to the File Server, you must issue an HTTP PUT request with the full file in the body and the header Content-Length matching its size.
Example:
curl -X PUT "$UPLOAD_URL" --upload-file /path/to/file.obj