This API Requires a Webhook URL
Go here for more information on setting up a webhook listener.
MetaMap takes a user's National Identity Number (NIN) or phone number to verify their identity through the National Identity Management Commission (NIMC).
The request body can also include metadata so you can use your own internal references to identify your users and requests. Send metadata for every Webhook. The metadata should have a maximum size of ≦4Kb and be only one level deep.