I've been stuck on this issue for some time now, I am trying to subscribe to Linkedin's webhook using ngrok for testing on localhost, and have been trying for some time now, i have tried using encode uri's as well but still running into error, I have verified that the APP_ID, profileId and organizationId i'm using are correct, but still i get the same error. I have also tried using the Restli protocol that linkedin suggests in their documentation but to no avail.

let url = `https://api.linkedin.com/v2/eventSubscriptions/(developerApplication:urn:li:developerApplication:${config.IN.APP_ID},user:urn:li:person:${profileId},entity:urn:li:organization:${organizationId},eventType:ORGANIZATION_SOCIAL_ACTION_NOTIFICATIONS)`;
    return new Promise((resolve, reject) => {
      request(
        {
          url,
          method: 'PUT',
          headers: {
            'Content-Type': 'application/json',
            Authorization: `Bearer ${accessToken}`,
            // 'X-Restli-Protocol-Version': '2.0.0',
          },
          json: {
            webhook: "https://url.ngrok.io/api/v1/webhook/linkedin/callback"
          },
        },
        (err, response, body) => {
          if (err) {
            reject(err);
          } else {
            resolve(body);
          }
        },
      );
    });

I have been receiving this error constantly no matter what I try, I have tried sending the url like this:

• https://api.linkedin.com/v2/eventSubscriptions/(developerApplication:urn:li:developerApplication:{${config.IN.APP_ID}},user:urn:li:person:{${profileId}},entity:urn:li:organization:{${organizationId}},eventType:ORGANIZATION_SOCIAL_ACTION_NOTIFICATIONS)
• https://api.linkedin.com/v2/eventSubscriptions/${encodeURIComponent((developerApplication:urn:li:developerApplication:${config.IN.APP_ID},user:urn:li:person:${profileId},entity:urn:li:organization:${organizationId},eventType:ORGANIZATION_SOCIAL_ACTION_NOTIFICATIONS))

All I receive is this error

'{"serviceErrorCode":100,"message":"Unpermitted fields present in RESOURCE_KEY: Data Processing Exception while processing fields [/key]","status":403}'

Any help would be appreciated, I have been stuck on this for a while now.