| Name | Type | Description | Notes |
|---|---|---|---|
| channelType | String | Specifies the type of the channel. Either open_channels or group_channels. | |
| channelUrl | String | Specifies the URL of the channel to store the metacounter in. | |
| metacounter | String | Specifies a `JSON` object that stores key-value items. The key must not have a comma (,) and its length is limited to 128 characters. The value must be an integer. This property can have up to 5 items. |