curl --request POST \
  --url https://sandbox.killb.app/api/v2/faker/cash-in \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "rampId": "3c90c3cc-0d44-4b50-8888-8dd25736052a"
}
'

{
  "errorCode": "API_USER.0001",
  "arguments": [
    {
      "key": "email",
      "value": "[email protected]"
    }
  ],
  "message": [
    "User not found",
    "Account not found"
  ],
  "statusCode": "400"
}