curl -X POST http://localhost:5080/api/v1/streams \
  -H "authorization: Bearer $MS_JWT" \
  -H 'content-type: application/json' \
  -d '{
    "name": "app",
    "stream_type": "logs",
    "fields": [
      {
        "name": "trace_id",
        "data_type": "utf8",
        "nullable": true,
        "indexed": true,
        "index_type": "exact",
        "encrypted": false
      }
    ],
    "retention_days": 30
  }'