,
I am trying to follow this guide:
problem:
  'pubId' : 'test client ID', // Enter your own client-ID here
GET request 
return error 403 :
For 
client=    - I've tried putting my Publisher ID - (pub-6139185171352565).
I get error 403
Then I`ve looked for other sites which implemented similar way, their value for client which does not match publisher ID structure, for example:
zapmeta-web-int
izito-smh-int
infospace-bestfindtoday
etc..
Then i tested my code with these values for 
pubId  and i got results...
It seems to me that 
pubId  is not publisher ID, 
please advise where do I find it or why isn't it working
thank you!