{
   'uid' => {
      '1' => ['3','4','5','6'],
      '2' => ['4','3','1','5'],
   },
   'did' => {
      '1' => '2',
      '3' => ['1','2'],
      '4' => ['1','2'],
      '5' => ['1','2'],
      '6' => '1',
   },
}