我有这样的json对象{"_id":"5c2e811154855c0012308f00","__pclass":"QXRzXFByb2plY3RcTW9kZWxcUHJvamVjdA==","id":44328,"name":"Testprojectviapostman2//2","address":"somerandomaddress","area":null,"bidDate":null,"building":{"name":"HealthCareFacilities","type":"DentalClinic"},"collaborators":[],"createdBy":{"