curl --request POST \
  --url https://end-api.shallow.ink/api/v1/auth/anonymous-token \
  --header 'Content-Type: application/json' \
  --data '
{
  "fingerprint": "<string>"
}
'

{
  "code": 0,
  "data": {
    "token": "anon_xxxx",
    "expires_in": 7200
  }
}