# AddPlaylistContentsMetadata ## Fields | Field | Type | Required | Description | Example | | -------------------------------------------------------------- | -------------------------------------------------------------- | -------------------------------------------------------------- | -------------------------------------------------------------- | -------------------------------------------------------------- | | `rating_key` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | 94 | | `key` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | /playlists/94/items | | `guid` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | com.plexapp.agents.none://972e3047-83d6-4848-a000-261f0af26ba2 | | `type` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | playlist | | `title` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | A great playlist | | `summary` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | One of my great playlists | | `smart` | *T.nilable(T::Boolean)* | :heavy_minus_sign: | N/A | false | | `playlist_type` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | video | | `composite` | *T.nilable(::String)* | :heavy_minus_sign: | N/A | /playlists/94/composite/1705800070 | | `duration` | *T.nilable(::Integer)* | :heavy_minus_sign: | N/A | 423000 | | `leaf_count` | *T.nilable(::Integer)* | :heavy_minus_sign: | N/A | 3 | | `added_at` | *T.nilable(::Integer)* | :heavy_minus_sign: | N/A | 1705716458 | | `updated_at` | *T.nilable(::Integer)* | :heavy_minus_sign: | N/A | 1705800070 |