{
  "id": 2,
  "method": "balanceMargin_request",
  "params": [
    "BTC",
    "USDT"
  ]
}

{
  "id": 3,
  "method": "balanceMargin_subscribe",
  "params": [
    "BTC",
    "USDT"
  ]
}

{
  "id": 4,
  "method": "balanceMargin_unsubscribe",
  "params": []
}

{
  "error": null,
  "result": {
    "BTC": {
      "balance": "0.0006092",
      "borrow": "0",
      "available_without_borrow": "0.0006092",
      "available_with_borrow": "0.00288701"
    },
    "USDT": {
      "balance": "0.00538073",
      "borrow": "0",
      "available_without_borrow": "0.00538073",
      "available_with_borrow": "28.43739825"
    }
  },
  "id": 1
}

{
  "id": 3,
  "result": {
    "status": "success"
  },
  "error": null
}

{
  "method": "balanceMargin_update",
  "params": [
    {
      "a": "BTC",
      "B": "0.0006092",
      "b": "0",
      "av": "0.0006092",
      "ab": "0.00288701"
    },
    {
      "a": "USDT",
      "B": "0.00538073",
      "b": "0",
      "av": "0.00538073",
      "ab": "28.43739825"
    }
  ],
  "id": null
}

{
  "id": 4,
  "result": {
    "status": "success"
  },
  "error": null
}