Members in our systems may be identified with their phone numbers (msisdns) according to E.164. We use the format (in most cases, we normalize it automatically) without leading 00 or + and without spaces, so that it contains only digits, i.e. 4740769126.
Unless stated otherwise, our systems recognize and return date in ISO8601 format.Example: 2012-04-23T18:25:43.511Z - 23rd of April 2012, 18:25:43 with 511 milliseconds in UTC timezone.