avilches

import java.security.*;
public class Sha {
    public static String hash256(String data) throws NoSuchAlgorithmException {
        MessageDigest md = MessageDigest.getInstance("SHA-256");
        md.update(data.getBytes());
        return bytesToHex(md.digest());
    }
    public static String bytesToHex(byte[] bytes) {
        StringBuffer result = new StringBuffer();
        for (byte byt : bytes) result.append(Integer.toString((byt & 0xff) + 0x100, 16).substring(1));

avilches

{"id":147,
"last_updated":1290507216000,
"date_created":1290507215000,
"created_by":"you", 
"user_id":8,

"name":"Test",
"gender":"male",
"title":"Title",
"business":"Paradigma",

avilches

{"contact":{
"user_id":8,
"name":"Test",
"gender":"male",
"title":"Title",
"business":"Paradigma",
"data":[
          {"type":"telephone","value":"+15717483198",    "rel":"work","is_primary":true},
          {"type":"email",    "value":"pepitp@gmail.com","label":"wow","is_primary":false}
       ],

avilches

{"updated":[130,131,132,133],
 "deleted":[1,2,4],
 "timestamp":1290506001724 }