Display a key from unserialized data field
You need to add an Global PHP field and put the following code in output value to get the identifier field value.

&lt;?php 
 $result = unserialize($row-&gt;data); 
 print $result['identifier'];
?&gt;


Note : You should exclude Data field from display.

Since you very cautious in not using PHP, did you try the following option, change the ckeditor_skin to identifier. But it will produce the output as 76561198181833179['identifier'].