Update Incident Timeline

{
	"data": {
		"type": "<string>",
		"id": "<string>",
		"attributes": {
			"created": "2025-04-02T05:15:59.080130+00:00",
			"modified": "2025-04-02T05:15:59.080130+00:00",
			"deleted": null,
			"display_time": "2025-04-02T05:15:59.091382+00:00",
			"creation_idempotency_key": null,
			"cell_type": "<string>",
			"content": {
				"content": "<string>",
				"current_state": "<string>"
			},
			"source": "<string>",
			"last_modified_by": {
				"data": {
					"type": "<string>",
					"id": "<string>",
					"attributes": {
						"uuid": "<string>",
						"handle": "<string>",
						"email": "<string>",
						"name": null,
						"icon": "<string>"
					}
				}
			},
			"last_modified_by_uuid": null,
			"created_by": {
				"data": {
					"type": "<string>",
					"id": "<string>",
					"attributes": {
						"uuid": "<string>",
						"handle": "<string>",
						"email": "<string>",
						"name": null,
						"icon": "<string>"
					}
				}
			},
			"created_by_uuid": null,
			"important": false,
			"thread_summary": null,
			"parent_uuid": null
		},
		"relationships": {
			"created_by_user": {
				"data": {
					"type": "<string>",
					"id": "<string>"
				}
			},
			"last_modified_by_user": {
				"data": {
					"type": "<string>",
					"id": "<string>"
				}
			}
		}
	}
}