Creates a batch of up to 1000 contacts as specified by the list of contacts.

The contacts are created asynchronously. A CONTACT_CREATE event will be generated for every successfully created contact.

{
  "contacts": [
    {
      "channel_identities": [
        {
          "channel": "WHATSAPP"
        }
      ],
      "channel_priority": [
        "WHATSAPP"
      ]
    }
  ]
}