curl -X GET 'https://app.memorylake.cn/openapi/memorylake/api/v3/conversations/conv-4f42addb6cb69d6ee7de2451cb590e06/messages?page_size=50' \
  -H 'Authorization: Bearer sk_xxxxxx'

{
  "success": true,
  "data": {
    "items": [
      {
        "id": "msg_1a2b3c4d5e6f7a8b",
        "content": [
          {
            "block_type": "TEXT",
            "text": "Hi, I'd like to learn more about your enterprise plan."
          }
        ],
        "metadata": {},
        "timestamp": "2025-06-01T14:05:00Z",
        "conversation_id": "conv-4f42addb6cb69d6ee7de2451cb590e06",
        "sequence_no": 1,
        "actor_id": "actor-93688d5ec8d2e98701be3d5554cbc455",
        "created_at": "2025-06-01T14:05:12Z"
      },
      {
        "id": "msg_9e4b2c3d5f6a7b8c",
        "content": [
          {
            "block_type": "TEXT",
            "text": "Of course! Our enterprise plan includes dedicated support, custom integrations, and advanced analytics. Would you like me to walk you through the details?"
          }
        ],
        "metadata": {},
        "timestamp": "2025-06-01T14:05:30Z",
        "conversation_id": "conv-4f42addb6cb69d6ee7de2451cb590e06",
        "sequence_no": 2,
        "actor_id": "actor-9831773f1353358f4196b22505d879e0",
        "created_at": "2025-06-01T14:05:35Z"
      }
    ],
    "continuation_token": null
  }
}