Possible API to returning object or any data format instead string?

Hello! As developer who use API gpt-3-turbo, I always ask question like “…What is his name, surname, age, mobile number, email as javascript object of {name: String, surname: String, age: Number, mobile_number: String, email: String}?” and then I must find the way to convert it to object before use it in analysis process, so I think that was good if it already prepared it as object for me. Thank you.