JsonRPC api response type doesn't match request type

[ququzone]

What did you do? If possible, provide a recipe for reproducing the error.

JsonRPC api response's id field type doesn't match the request type.

Request

curl -X POST https://babel-api.mainnet.iotex.io -H "Content-Type:application/json" --data '{
    "jsonrpc":"2.0",
                "method":"eth_getTransactionCount",
                "params":["0x002E983C3134Cf7e7b0F2A3852fb66Faa34a5062", "latest"],
    "id": "1"
}'

Response

{
 "jsonrpc":"2.0",
  "id":1, 
  "result":"0x0"
}

The id field's type should be string, not number. It's should be match the request type.