curl --request POST \
  --url https://futuresopenapi.odyssey.trade/fapi/v1/edit_lever \
  --header 'Content-Type: application/json' \
  --header 'x-ch-apikey: <x-ch-apikey>' \
  --header 'x-ch-sign: <x-ch-sign>' \
  --header 'x-ch-ts: <x-ch-ts>' \
  --data '{
  "contract_name": "<string>",
  "now_level": 123
}'

{
  "code": "<string>",
  "msg": "<string>",
  "data": null
}