Path Validation Error When Trying to Link Accounts Via Management API

Hello, I am trying to link accounts via the management api using the auth0.js library. I am using the following code.

  linkAccounts(authResult) {
    return new Promise((resolve) => {
      const auth0Manage = new auth0.Management({
        domain: '',
        token: this.getAccessToken(),
      const secondaryUserToken = authResult.idToken;
      auth0Manage.linkUser(this.getIdToken(),secondaryUserToken, (err,response,body) => { 

However, when I make the call, I am receiving a status 400: bad request.

The error I get is:

"Path validation error: 'Object didn't pass validation for format user-id: <sent_token>...
on property id (The user_id of the primary identity where you are linking the secondary account to).

Hello @average_user,

Not an expert with auth0.js, but I believe that first parameter to auth0Manage.linkUser should be the user_id (e.g., auth0|abc123) of the primary identity, not an idToken.

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