Post data in customer apoi is not working in c# or in postmann


I am trying to create new customer from c# and postmann but its not working. WHen i create customer from postmann its giving me in response 200 status but when i check from customers list there is no customer added.Iam posting this data in json format from postmann

{ “email”: “”, “firstname”: “Max”, “lastname”: “Meier”, “salutation”: “mr”, “doubleOptinRegister”: true, “sendOptinMail”: true, “billing”: { “firstname”: “Max”, “lastname”: “Meier”, “salutation”: “mr”, “street”: “Musterstrasse 55”, “city”: “Sch\u00f6ppingen”, “zipcode”: “48624”, “country”: 2 } }

kindly help me to solve this