Pretty vs Ugly JSON

pretty.json

{
   "items":[
      {
         "address":"someemail1@yahoo.com",
         "code":"554",
         "error":"554 delivery error: dd This user doesn't have a yahoo.com account (someemail1@yahoo.com) [0] - mta1481.mail.ne1.yahoo.com",
         "created_at":"Thu, 07 May 2015 23:07:47 UTC"
      },
      {
         "address":"someemail2@gmail.com",
         "code":"550",
         "error":"550 5.1.1 The email account that you tried to reach does not exist. Please try\n5.1.1 double-checking the recipient's email address for typos or\n5.1.1 unnecessary spaces. Learn more at\n5.1.1 http://support.google.com/mail/bin/answer.py?answer=6596 xv3si12818843vdb.43 - gsmtp",
         "created_at":"Sun, 03 May 2015 13:22:49 UTC"
      },
      {
         "address":"someemail3@domain.com",
         "code":"550",
         "error":"550 No Such User Here",
         "created_at":"Thu, 02 Jul 2015 17:01:31 UTC"
      },
      {
         "address":"someemail4@domain.com",
         "code":"550",
         "error":"550 Administrative prohibition",
         "created_at":"Thu, 21 May 2015 03:30:38 UTC"
      }
   ],
   "paging":{
      "first":"https://api.mailgun.net/v3/mg.yourdomain.com/bounces?limit=100",
      "last":"https://api.mailgun.net/v3/mg.yourdomain.com/bounces?page=last\u0026limit=100",
      "next":"https://api.mailgun.net/v3/mg.yourdomain.com/bounces?page=next\u0026address=someemail4%40domain.com\u0026limit=100",
      "previous":"https://api.mailgun.net/v3/mg.yourdomain.com/bounces?page=previous\u0026address=someemail1%40yahoo.com\u0026limit=100"
   }
}

ugly.json

{"items":[{"address":"someemail1@yahoo.com","code":"554","error":"554 delivery error: dd This user doesn't have a yahoo.com account (someemail1@yahoo.com) [0] - mta1481.mail.ne1.yahoo.com","created_at":"Thu, 07 May 2015 23:07:47 UTC"},{"address":"someemail2@gmail.com","code":"550","error":"550 5.1.1 The email account that you tried to reach does not exist. Please try\n5.1.1 double-checking the recipient's email address for typos or\n5.1.1 unnecessary spaces. Learn more at\n5.1.1 http://support.google.com/mail/bin/answer.py?answer=6596 xv3si12818843vdb.43 - gsmtp","created_at":"Sun, 03 May 2015 13:22:49 UTC"},{"address":"someemail3@domain.com","code":"550","error":"550 No Such User Here","created_at":"Thu, 02 Jul 2015 17:01:31 UTC"},{"address":"someemail4@domain.com","code":"550","error":"550 Administrative prohibition","created_at":"Thu, 21 May 2015 03:30:38 UTC"}],"paging":{"first":"https://api.mailgun.net/v3/mg.yourdomain.com/bounces?limit=100","last":"https://api.mailgun.net/v3/mg.yourdomain.com/bounces?page=last\u0026limit=100","next":"https://api.mailgun.net/v3/mg.yourdomain.com/bounces?page=next\u0026address=someemail4%40domain.com\u0026limit=100","previous":"https://api.mailgun.net/v3/mg.yourdomain.com/bounces?page=previous\u0026address=someemail1%40yahoo.com\u0026limit=100"}}