Account to Entitlement Mapping

[DG1811]

We are integrating an application using REST connector where we are able to extract the accounts and the entitlements . But the Account to Ent mapping is not happening as the API does not give us proper data. 

Attaching the import account json.

URL1 - is retrieving the user details

URL2 -  is retrieving the entitlement details

URL3 -  is retrieving the users to group mapping. Please find the below from the POSTMAN. So the group name in the body is something which will determine how many users are part of that group and based on that the mapping should happen. 

Please suggest a solution for it.

Thanks