It seems to me that your initial datastructure isn't what you want; is it possible you could change it when you are collecting the data initially to something like:

{
   '690557' =>
      [
         { 'one' => 'USA', 'two' => 'GOD', 'four'=>'hello how are u' }
+,
         { 'one' => 'USA', 'two' => 'GOD', 'four'=>'I am fine' }
      ],
   '690558' =>
      [
         { 'one' => 'UK', 'two' => 'GOD', 'four'=>'I am Okay' }
      ]
}
[download]

or maybe:

{
   '690557' =>
      {
         'one' => 'USA', 'two' => 'GOD',
         'four'=> [ 'hello how are u', 'I am fine' ]
      },
   '690558' =>
      {
         'one' => 'UK', 'two' => 'GOD',
         'four'=> [ 'I am Okay' ]
      }
}
[download]

Don't copy a from a reference to an array or hash variable just to get things out of it; just do for ... ( @$arrayref ) and $hashref->{$key}; see references quick reference for guidance.