The structure of the “CreationDate” object is described below

{
	"creationDate": {
      "type": "FieldValue",
      "key": ""
	}
}

For this definition, only the type FieldValue, on the property Key The ID of the short text/Paragraph field is entered in Jira Cloud and used to add the creation/registration date of the ASMS case, so you can identify the creation/registration date of the case to which it is related from the Jira interface.