curl --location --request GET 'http://dev-cn.your-api-server.com/api/data/cities?appId&nonce&sign×tamp'
{
"data": [
{
"cityCode": "string",
"cityName": "string",
"firstLetter": "string",
"hot": true
}
],
"errCode": "string",
"errMessage": "string"
}