The Authentication and Authorization API returns a token which can be used to authenticate REST requests to Services. Include the token in the HTTP Authorization header of your REST requests as a bearer token:
Authorization: Bearer "access_token"
POST https://largescalematrix.router.hereapi.com/v1 HTTP/1.1 Authorization: Bearer eyJhbGceOyJSAMPLEiIsImN0eSISAMPLEt7VTFIllwIM0cKNCjN2WCCTqlwEEmk-t3gx1BpqUFoeBSAMPLEvhj8nl-RBGcyoljY... Cache-Control: no-cache
Remember that tokens expire 24 hours after being issued. To get a new token, you will need to create a new signature and use it to request another token using the Authentication and Authorization API.