curl --request GET \
  --url 'https://ca.raze.sh/api/sol/perp/markets/{market_id}/oi?apiKey='

{
  "market_id": "<string>",
  "data": [
    {
      "timestamp": 123,
      "long_oi_usd_e6": 123,
      "short_oi_usd_e6": 123,
      "position_count": 123
    }
  ],
  "count": 123
}