curl --request GET \
  --url https://staging-api.getpartna.com/v4/rate/verify-rate-key \
  --header 'x-api-key: <api-key>' \
  --header 'x-api-user: <api-key>'

{
  "data": {
    "isExp": false,
    "isValid": true
  },
  "message": "success"
}