Ensure SSO update runs after the user creation in datafeed endpoint

[adamjudd]

The datafeed endpoint is currently set to run the SSO update function (which adds any active subscriptions into the user meta data) before the user update function (which actually creates the user).

This results in any purchase of a subscription from a new customer not actually adding the subscription details in the meta. These two functions will need to be switched around to ensure the user exists before trying to add the subscription details.