Read company feed through linkedIn API

I am trying to read my LinkedIn company feed through LinkedIn API.

I have created app in LinkedIn and got

• clientID,
• client secret code and
• Access Token.

I tried different URL but getting same error:

https://api.linkedin.com/v2/organizations/{organizationID}
https://api.linkedin.com/v2/company/companyID

I am getting error message

Not enough permission to access: get /organization/organizationID

I am admin of my company. I have following permission for my apps:

• r_emailaddress
• r_liteprofile
• w_member_social

I am trying to show my linkedIn company page feed on my SharePoint page. I have to implement this solution in SharePoint 2013 and SharePoint O365.

I request anyone if could help or let me know if I am doing some thing wrong or how to proceed with next step.