Based on our understanding from our previous article "Dynamics 365 Quick way to get a record's guid, and what the source data looks like", we can also return some basic data of an entity.
Entity Object Type Code and GUID
https://bsmt.crm11.dynamics.com/api/data/v8.2/EntityDefinitions?$select=ObjectTypeCode&$filter=SchemaName eq 'bsmt_expense'