https://developer.niceincontact.com/API/AuthenticationAPI#/Token/getToken Required. Specify client_id. Required. Specify client_secret. Required. Specify access key. Required. Specify access secret. https://developer.niceincontact.com/API/AuthenticationAPI https://developer.niceincontact.com/API/AuthenticationAPI Required. Identifier of application that is associated with the authentication token. Required. Specify the redirect_uri of your application. https://developer.niceincontact.com/API/AuthenticationAPI https://developer.niceincontact.com/API/AuthenticationAPI