CXone Personal Connection API POST returning 401 Unauthorized

I’m trying to trigger a Personal Connection outbound call using the CXone API. The documentation says to POST to /api/v2/insights/icap/personal-connection/outbound-calls.

Here’s the JSON payload I’m sending:

{
 "agentId": "12345",
 "phoneNumber": "+15550199"
}

The response is a 401 Unauthorized. I’ve verified the access token is valid by calling /api/v2/authorizations/user. Is there a specific scope I’m missing for this endpoint?