Update contacts labels

Bearer authentication header of the form Bearer <token>, where <token> is your apiKey generated in Periskope API settings.

Organisation phone number(with country code) and without any spaces or special characters.

e.g. 9190043XXXXX

List of comma-separated labels

E.g. "high, low, medium"

Array of Contact IDs

E.g. ["9198765XXXXX@c.us", "9198765XXXXX@c.us"]