Authorization: Bearer ********************{
    "categoryname": "string",
    "categorynum": "string",
    "createtime": "string",
    "categorylevel": 0,
    "pid": 0,
    "topnode": "string"
}curl --location --request PUT '/gc/modify-gc' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
    "categoryname": "string",
    "categorynum": "string",
    "createtime": "string",
    "categorylevel": 0,
    "pid": 0,
    "topnode": "string"
}'{
    "code": 10000,
    "message": "success",
    "data": "string"
}