`let json = """ {"user_id": "abc", "name": "tattn"} """.data(using: .utf8)!` For Upper Camel Case: let json = """ {"UserId": "abc", "Name": "tattn"} """.data(using: .utf8)!
let json = """ {"user_id": "abc", "name": "tattn"} """.data(using: .utf8)!For Upper Camel Case:
let json = """
{"UserId": "abc", "Name": "tattn"}
""".data(using: .utf8)!