%hash = {
     'some item'  = > {
          'source' => 'a source',
          'conversions' => [
                             {
                              'conversion 1' => 'value 1',
                              'conversion 2' => 'value 2'
                             },
                             {
                              'conversion 3' => 'value 3',
                              'conversion 4' => 'value 4'
                              'conversion 5' => 'value 5'
                             }
                            ],
          'whatever' => 'eh'
         },
     'another item'  = > {
          'source' => 'another source',
          'conversions' => [
                            {
                             'conversion 1' => 'value 1',
                             'conversion 2' => 'value 2'
                            }
                           ],
          'whatever' => 'eh'
        },
     'one more item'  = > {
          'source' => 'another source',
          'whatever' => 'eh'
        },
}