curl --request GET \
  --url https://api.yuannengai.com/v1/account/token-balance \
  --header 'Authorization: Bearer <token>'

{
  "code": 200,
  "data": {
    "token_balance": 1000000,
    "token_used": 50000,
    "token_total": 1050000,
    "currency": "tokens"
  }
}