Contatos sincronizados

{
  "object": "whatsapp_business_account",
  "entry": [
    {
      "id": "1234567890123456",
      "changes": [
        {
          "value": {
            "messaging_product": "whatsapp",
            "metadata": {
              "display_phone_number": "5511988887777",
              "phone_number_id": "1234567890123456"
            },
            "state_sync": [
              {
                "type": "contact",
                "contact": {
                  "full_name": "Maria Souza",
                  "first_name": "Maria",
                  "phone_number": "5511999999999"
                },
                "action": "add",
                "metadata": { "timestamp": "1739321024" }
              }
            ]
          },
          "field": "smb_app_state_sync"
        }
      ]
    }
  ]
}