How to bind a file ID to a field in a deal via API?

Question

API

There is a file that is already stored on Bitrix in the DISK.
I create a new deal and there is a file field and I try to attach a file there by this ID.

crm.deal.update?id=12528&fields[UF_CRM_1588898200647]=[file id] - one of the examples I tried. Does not work.

The thing is that there is a file on the disk, you only need to add it by ID in the TRANSACTION field, I think it's possible.

Please tell me how to build a link.