Example for instance creation from another backup image

[1ndistinct]

I am using your API in order to automate our systems setup process, I have
run into an issue. I seem to be unable to figure out how to make a call to
this endpoint:
POST /cloud/project/{serviceName}/instance
If you could provide me with an example, that would be great.
I am using OVH- NodeJS as the use case requires it to be in JavaScript.
For the example, we need to be able to create an instance from the backup
of another instance. and we need automated backups on.
here is what I have done so far, but a 400 gets returned!
return new Promise((resolve,reject) =>
{
ovh.request('POST', '/cloud/project/'+config.ovh_service_name+
'/instance', {
flavorId: "4d4fd037-9493-4f2b-9afe-b542b5248eac",
imageId: "309e9cc9-8318-49a0-9c41-6d9b7ec1f071",
sshKeyId: "51326c68636d4675",
monthlyBilling: false,
name:"name",
region: "ovh-eu",
autobackup:{rotation:7,cron:"0 0 * * *"}
}, function (err, result) {
if(err)
reject(err)
else
resolve(result);
});