Login a Subscription Customer

The contact id you received through webhook data.

xxxxxxxxxx
apiSignature=`echo -n "userId=1" | openssl dgst -sha256 -hmac "INSTANCE_API_SECRET" -binary | openssl enc -base64`
curl --request POST "https://api.pay-link.eu/v1.0/AuthToken/?instance=INSTANCE_NAME" --data-urlencode "ApiSignature=$apiSignature" --data-urlencode "userId=1"

200200