| 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 target channel. | |
| messageId | Integer | Specifies the unique ID of the message to add key-values items for additional information. | |
| sortedMetaarray | String | Specifies a `JSON` object of one or more key-values items which store additional message information. Each item consists of a key and the values in an array. Items are saved and will be returned in the exact order they've been specified. |