A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: "2014-10-02T15:01:23Z" and "2014-10-02T15:01:23.045123456Z".
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2023-10-03 UTC."],[],["Upon successful registration, the response includes the registered MSISDN and its expiration time. The MSISDN is a string representing the phone number registered for notifications. The expiration time is a timestamp in RFC3339 UTC \"Zulu\" format, detailing when the registration expires, including nanosecond resolution. This timestamp can display up to nine fractional digits, showing examples of the format.\n"]]