Create a webhook subscription

Subscribe a public HTTPS URL to one or more platform events. Every requested event is delivered to the same URL and signed with the single signingSecret returned in the response — store it, as it is only returned at creation time. The token must hold the OAuth scope each requested event needs: read:creator for subscription.new, subscription.renewed, subscription.cancelled, subscription.expired, follow.new, purchase.new, tip.new, the checkout_link.* and payout.paid events, and the creator.payment.succeeded, creator.subscription.*, creator.refund.created, and creator.dispute.* events; read:post for creator.post.liked and creator.post.commented; read:chat for message.received, message.read, creator.message.received, creator.message.sent, creator.message.read, creator.message.reaction, and creator.message.deleted.