I think that conventional wisdom about the value of a periodic Clean, Lube & Adjust (CLA) job got sort of upended in the late film era, as newer designs made extensive use of slippery polymers which may need little or no cleaning or lubrication, unless the camera has become contaminated by fine gritty dust. I'd say that if it appears to work properly (no odd noises or error messages), you are good to go.
For most trouble-free results, keep this or any other camera dust-free, dry, and avoid storing at temperatures that you would find uncomfortable.
But if you nevertheless want to have some sort of preventive maintenance done, you might contact Fototech in Poland. Parts which could possibly fail include tiny nylon pinion gears, and any flexible connectors which get flexed a lot. The latter sorts of part would be reproduced with the aid of CAD software, unless good NOS parts can be had, which I doubt.
Here's an example of a relatively "modern" film camera being repaired. Compared to designs from the mid-1970s or earlier, it's all but unrecognizable.