This service allows to receive notifications from Withings:

• for the Health Data APIs : your application can subscribe to a variety or events, including user data creation and updates. Notifications will be sent to your servers when the subscribed events occur. (more information). Please note that you need to subscribe for each individual user.
• for the Logistics APIs: a notification will be sent when there is an order update (more information)
• for partners integrating Withings Cellular Solutions or Withings Mobile SDK: you can use the NO_ACCOUNT_ASSOCIATED event to track unassociated devices . Please note you need to subscribe only once per application.

Note: depending on your use case, the request parameters may change:

• for the Health Data APIs: use a valid access_token in the header but don't use signature and nonce in the query parameters.
• for the Logistics APIs: the subscription is done automatically an order is placed (please refer to the dedicated documentation section)
• for partners integrating Withings Cellular Solutions or Withings Mobile SDK, to subscribe to the NO_ACCOUNT_ASSOCIATED event (appli = 53): use signature and nonce parameters but don't include an access_token in the header.