Implement a POST /eholdings/packages/bulk/fetch endpoint to mod-kb-ebsco-java module to retrieve information about packages.
in POST body back-end expects to retrieve a list with ids in the following format or similar to
and in responce user will have to get a list of loaded entities and failed entities. As example
the mod-agreements are only interested in a few attributes, so the schema for this endpoint can be simplified.
Note: see additional information on Confluence page