Foreman host create with two interfaces

#!/usr/bin/env ruby
require 'rubygems'
require 'rest-client'
require 'json'
client = RestClient::Resource.new('http://localhost:3000',
                                  :user     => 'admin',
                                  :password => 'xxx',
                                  :headers  => { :accept => :json })

parameters = { :host => {
   :name => 'mg-vmware-test1.qa.atix',
   :ip => '192.168.1.234',
   :hostgroup_id => 1,
   :compute_resource_id => 1,
   :hostgroup_id => 4,
   :domain_id => 1,
   :subnet_id => 1,
   :puppet_proxy_id => 3,
   :mac => '',
     "interfaces_attributes"=>{
        "new_1367236066102"=>{
            "_destroy"=>"false",
            "type"=>"Nic::Managed",
            "mac"=>"00:00:00:00:00:02",
            "ip"=>"192.168.3.234",
            "domain_id"=>"2",
            "subnet_id"=>"2",
            "name"=>"mg-vmware-test1"
        },
     },
   :compute_attributes=>{
      "cpus"=>"1",
      "guest_id"=>"rhel6_64Guest",
      "start"=>"1",
      "cluster"=>"ATIX_Test",
      "path"=>"/Datencenter/axref200/vm",
      "memory_mb"=>"768",
      "interfaces_attributes"=>{
        "new_eth0"=>{"network"=>"QA", "type"=>"VirtualVmxnet3", "_delete"=>""},
        "new_eth1"=>{"network"=>"Gallien", "type"=>"VirtualVmxnet3", "_delete"=>""},
      },
      "volumes_attributes"=>{
        "new_volumes"=>{"size_gb"=>"10", "datastore"=>"TESTING", "_delete"=>"", "name"=>"Hard disk"},
        "0"=>{"size_gb"=>"10", "datastore"=>"TESTING", "_delete"=>"", "name"=>"Hard disk"}
      }
   },
   :host_parameters_attributes => [

   ],
   :build => 1
}}

begin
  client["hosts/"].post(parameters)
rescue => e
  puts e.response
end