curl --location '/api/admin/books//files' \
--header 'Authorization: Bearer <token>' \
--form 'file=@""' \
--form 'languageId=""' \
--form 'languageCode=""' \
--form 'fileType=""' \
--form 'autoExtractCover="true"' \
--form 'overrideCover="false"'{
"id": "f2b3c4d5-e6f7-8901-bcde-f12345678901",
"fileName": "005-fr-loyaute-et-deloyaute.pdf",
"coverExtracted": false,
"coverFileName": null
}