How to fetch a activity feeds from linked in api

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SharePoint2013

Linkedln

Hi,
I am working on custom web part to retrieve the post feed from the linkedin user. Through my access token I tried to fetch the data but it shows "service ErrorCode":401. On my explore I found that I need to get permission from linkedin partners.
I have registered with this link <a href="https://developer.linkedin.com/partner-programs/apply> to get api's from linkedin support but there is no response.

What I have tried:

https://api.linkedin.com/v2/activityFeedsq=networkShares&count=2&oauth2_access_token"="***"

through this url i am trying to fetch my post feed activity