How can I pass the variable value to this string in python?

I want to assign a variable to the stop loss and take profit in the following phrase. According to the exchange documentation, these values ​​are constants as follows(for example: 102217.88):

paramsMap = {
    "symbol": symbol,
    "side": side,
    "positionSide": positionSide,
    "type": "MARKET",
    "quantity": amount,
    "stopLoss": "{\"type\": \"STOP_MARKET\", \"stopPrice\": 102217.88,\"workingType\":\"MARK_PRICE\"}",
    "takeProfit": "{\"type\": \"TAKE_PROFIT_MARKET\", \"stopPrice\": 102363.2178,\"price\": 102363.2178,\"workingType\":\"MARK_PRICE\"}"
}

When I use the string.format() function as below:

"stopLoss": "{\"type\": \"STOP_MARKET\", \"stopPrice\": {0},\"workingType\":\"MARK_PRICE\"}".format(str(sl)),

I get this error:

KeyError: '"type"'

So, how can I pass the sl variable value to this string?

Edit: I put the whole of my function that places an order in the exchange for more clarification.

def PlaceOrder(symbol, side, positionSide, amount, tp, sl):
        payload = {}
        path = '/openApi/swap/v2/trade/order'
        method = "POST"
        paramsMap = {
        "symbol": symbol,
        "side": side,
        "positionSide": positionSide,
        "type": "MARKET",
        "quantity": amount,
        "stopLoss": "{\"type\": \"STOP_MARKET\", \"stopPrice\": {},\"workingType\":\"MARK_PRICE\"}".format(str(sl)),
        "takeProfit": "{\"type\": \"TAKE_PROFIT_MARKET\", \"stopPrice\": {},\"price\": 102363.2178,\"workingType\":\"MARK_PRICE\"}".format(str(tp))
    }
        paramsStr = request_client.parseParam(paramsMap)
        response = request_client.send_request(method, path, paramsStr, payload)
        
        return response.json()

According to JonSG's comment, I use the double {}; however, I get this error again:

---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
Cell In[4], line 5
      3 tp, sl = Bingx.RiskReward(symbol, buy=True, risk=0.12, reward=0.06,leverage=30)
      4 print(f"tp:{tp} sl:{sl}")
----> 5 response = Bingx.PlaceOrder(symbol, 'BUY', 'LONG', 0.0001, tp, sl)
      6 response

Cell In[1], line 465, in Bingx.PlaceOrder(symbol, side, positionSide, amount, tp, sl)
    457     path = '/openApi/swap/v2/trade/order'
    458     method = "POST"
    459     paramsMap = {
    460     "symbol": symbol,
    461     "side": side,
    462     "positionSide": positionSide,
    463     "type": "MARKET",
    464     "quantity": amount,
--> 465     "stopLoss": "{\"type\": \"STOP_MARKET\", \"stopPrice\": {{}},\"workingType\":\"MARK_PRICE\"}".format(str(sl)),
    466     "takeProfit": "{\"type\": \"TAKE_PROFIT_MARKET\", \"stopPrice\": {{}},\"workingType\":\"MARK_PRICE\"}".format(str(tp))
    467 }
    468     paramsStr = request_client.parseParam(paramsMap)
    469     response = request_client.send_request(method, path, paramsStr, payload)

KeyError: '"type"'

Don't use string formatting to create nested JSON; use the json library. Then you simply pass the variable as a value in the dictionary.

import json

paramsMap = {
    "symbol": symbol,
    "side": side,
    "positionSide": positionSide,
    "type": "MARKET",
    "quantity": amount,
    "stopLoss": json.dumps({"type": "STOP_MARKET", "stopPrice": sl,"workingType":"MARK_PRICE"}),
    "takeProfit": json.dumps({"type": "TAKE_PROFIT_MARKET", "stopPrice": tp,"workingType":"MARK_PRICE"})
}