Get an owner ID-file upload URL
Two-step upload, step one. Returns a file_id, a presigned url, and the headers required to PUT the file directly to S3. URL is valid for 5 minutes and accepts a single PUT.
Step two: call POST /api/external/customer/{customer}/owner/{owner}/files with the same file_id to register the file against the owner.
Max file size 25 MB. Allowed MIME: application/pdf, image/jpeg, image/png. Owner must not be locked (status APPROVED or PROCESSING). Required scope: customer:write.
Authorizations
The access token received from the authorization server in the OAuth 2.0 flow.
Body
Slot the upload will populate. Use id_document_front for the front of any ID, id_document_back for the back of two-sided IDs (e.g. driver's license).
id_document_front, id_document_back Response
Presigned URL ready.

