Mailchimp API - Start a batch operation

batches.json

{
    "operations": [
        {
            "method": "DELETE",
            "path": "lists/d8be282a42/members/0620517b07414ec8fd56ce1ed4ae3b72"
        },
        {
            "method": "DELETE",
            "path": "lists/dfce17dd1b/members/0620517b07414ec8fd56ce1ed4ae3b72"
        }
    ]
}