ServiceM8 create new job via API

I'm sending the following JSON to the SM8 API https://api.servicem8.com/api_1.0/job.json

The response I am getting is 200 OK, & the job is being created in my servicem8 dashboard, but the name and description fields are not being populated for some reason.

Also, I was hoping to capture the newly created job ID from the response object, but it is either not being returned or I am unsure how to access it.

Here's the JSON that I'm passing to the API:

{
    "status":"Quote",
    "job_address":"123 Street Lane, , London, SE2",
    "description":"Remove & replace existing carpets",
    "contact_first":"Joe",
    "contact_last":"Bloggs"
}

Anyone see what the problem is?

Cheers