curl --location --request GET 'https://open-api.coinank.com/api/etf/usBtcInflow' \
--header 'apikey;'
{
"success": true,
"code": "string",
"data": [
{
"list": [
{
"ticker": "string",
"change": 0,
"changeUsd": 0
}
],
"date": 0,
"change": 0,
"changeUsd": 0
}
]
}