RecommendConversionEvent

{
    "occurred_at": 0,
    "event_type": "recommend_conversion",
    "properties": {
        "action": "add_to_cart",
        "source_type": "recommendation",
        "item_id": "string",
        "quantity": 1,
        "unit_price": "string",
        "rec_session_id": "string"
    }
}