Rollerads Push Subscription Postback

Hey guys, how does this work?
How do I add my postback to my account?

I sent my manager my postback and asked her if she can add it but she send me another link back.

I sent her my postback: https://track667.live/postback?clickId=Replace
And she send me this: https://track667.live/postback?clickId={extClickId}

I though she needs to add my postback on her end so Rollerads can send data to it.

How does