To subscribe to webhooks for all businesses a Biz Owner has access to
send an authenticated
POST request to the https://api.yelp.com/v3/webhooks.

Note: Currently only leads_event webhooks
are supported (NEW_EVENT, CONSUMER_PHONE_NUMBER_OPT_IN_EVENT, CONSUMER_PHONE_NUMBER_OPT_OUT_EVENT).

A webhook subscription will have a default expiration date of 14 days.
To ensure no loss of data, it is recommended you unsubscribe and subscribe again
at least an hour before the expiration date and time.