The POST /environments/{envId}/users/{userId}/pairingKeys operation adds a pairing key to the specified user resource.

Use the applications to provide a list of native application IDs that can be used with this pairing key. Leave applications as an empty collection to allow all available native applications in the environment to be used.

Only native applications that have bundleId or packageName, and are associated with pushCredentials are considered available in this context. Such applications should represent native applications that exist in the Apple or Google applications store.