External ID for the new refitted model provided by client. Should be unique within the project.
List of source entities, for example, time series. If omitted, will use data from fit.
List of target entities, for example, assets. If omitted, will use data from fit.
List of additional confirmed matches used to train the model. The new model uses a combination of this and trueMatches from the orginal model. If there are identical match-from ids, the pair from the original model is dropped.