Hi Srikant,
RetrieveEntityRequest req = new RetrieveEntityRequest()
{
LogicalName = "contact",
RetrieveAsIfPublished = true
};
RetrieveEntityResponse res = (RetrieveEntityResponse)YourPluginService.Execute(req);
res.EntityMetadata // you can get all metadata info about the entity
Polat Aydın Crm Software Developer