[
    {
        "id": 1,
        "from": "client",
        "text": "BONJOUR . IL NE RECONNAIS PAS CE FICHIER . JE VEUX FAIRE UN DTC OFF P0420",
        "file_url": "",
        "timestamp": "2026-04-29T14:40:39+02:00"
    },
    {
        "id": 2,
        "from": "admin",
        "text": "quel ecu svp veuillez le mentionner",
        "file_url": "",
        "timestamp": "2026-04-29T15:06:23+02:00"
    },
    {
        "id": 3,
        "from": "admin",
        "text": "ecu non supporté",
        "file_url": "",
        "timestamp": "2026-04-29T15:40:29+02:00"
    }
]