IGPAPI
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    Variable ProfileGridMediaSchemaConst

    ProfileGridMediaSchema: Struct<
        {
            authorId: optionalKey<String>;
            dashManifest: optionalKey<String>;
            id: String;
            mediaType: optionalKey<Number>;
            takenAt: optionalKey<Number>;
            trackingToken: optionalKey<String>;
            videoDuration: optionalKey<Number>;
        },
    > = ...

    One media of a profile's grid: the container id (<pk>_<authorPk>), its type, and the facts the posts feed's video-view telemetry reports from the grid answer (the author, when the media was taken, its organic tracking token, a video's duration and its DASH manifest).