SMS Notification:

Field	Type	Description
type	string	The type of notification.
Payload Data
message_id	string	The unique ID for the message.
provider_id	string	The ID to identify which provider was used to send the message.
provider_message_id	string	The unique ID that the provider generates so that if there is a front end the user can still search for the message there.
to_number	string	The number that the message was sent to.
message	string	The message body.
status	string	The status of the message [ACCEPTED, PENDING, UNDELIVERABLE, DELIVERED, REJECTED, EXPIRED]
time_stamp	dateTime	The date and time that the message was accepted.
cust_ref	string	The unique reference provide by the system, integrator, user.