{
  "req": "sub",
  "chs": [
    "tpsl"
  ]
}

{
  "req": "unsub",
  "chs": [
    "tpsl"
  ]
}

{
  "data": []
}

{
  "data": []
}

{
  "ch": "tpsl::12345",
  "ts": 1767225600002,
  "ets": 1767225600000,
  "sq": 1234567890,
  "data": {
    "oid": 1234567890,
    "st": "armed"
  }
}