Message Callback Schema
| Name | Type | Description | Notes |
|---|---|---|---|
| time | OffsetDateTime | ||
| type | CallbackTypeEnum | ||
| to | String | ||
| description | String | A detailed description of the event described by the callback. | |
| message | MessageCallbackMessage | ||
| errorCode | Integer | Optional error code, applicable only when type is `message-failed`. | [optional] |