The author of the entity.
The date and time when the entity was created. The expected string format is one of those returned by the `getTimestampFormats` function.
The id of the entity.
The type of the custom field.
The date and time when the entity was last updated. The expected string format is one of those returned by the `getTimestampFormats` function.
The user who last updated the entity.
When `true`, the comment is parsed as Markdown. When `false`, the comment is parsed as Wiki. Changing this value does not transform the markup from one syntax to another. When not set, acts as `true`.
The user groups that can view the comment. `null` by default.
The users who can view the comment. If none of the `visibleToUsers` and the `visibleToGroups` parameters are specified, the comment becomes visible to issue or article readers. `null` by default.