curl --request POST \
  --url 'https://api.onesignal.com/notifications?c=push' \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --data '{
  "app_id": "YOUR_APP_ID",
  "include_aliases": {
    "external_id": [
      "<string>"
    ],
    "onesignal_id": [
      "<string>"
    ]
  },
  "target_channel": "push",
  "include_subscription_ids": [
    "<string>"
  ],
  "included_segments": [
    "<string>"
  ],
  "excluded_segments": [
    "<string>"
  ],
  "filters": [
    {
      "field": "first_session",
      "key": "<string>",
      "relation": ">",
      "value": "1"
    }
  ],
  "contents": {
    "en": "<string>"
  },
  "headings": {
    "en": "<string>"
  },
  "subtitle": {
    "en": "<string>"
  },
  "name": "<string>",
  "template_id": "<string>",
  "custom_data": {},
  "ios_attachments": {
    "id": "<string>"
  },
  "big_picture": "<string>",
  "huawei_big_picture": "<string>",
  "adm_big_picture": "<string>",
  "chrome_web_image": "<string>",
  "small_icon": "<string>",
  "huawei_small_icon": "<string>",
  "adm_small_icon": "<string>",
  "large_icon": "<string>",
  "huawei_large_icon": "<string>",
  "adm_large_icon": "<string>",
  "chrome_web_icon": "<string>",
  "firefox_icon": "<string>",
  "chrome_web_badge": "<string>",
  "android_channel_id": "<string>",
  "existing_android_channel_id": "<string>",
  "huawei_channel_id": "<string>",
  "huawei_existing_channel_id": "<string>",
  "huawei_category": "<string>",
  "huawei_msg_type": "<string>",
  "huawei_bi_tag": "<string>",
  "priority": 123,
  "ios_interruption_level": "<string>",
  "ios_sound": "<string>",
  "ios_badgeType": "<string>",
  "ios_badgeCount": 123,
  "android_accent_color": "<string>",
  "huawei_accent_color": "<string>",
  "url": "<string>",
  "app_url": "<string>",
  "web_url": "<string>",
  "target_content_identifier": "<string>",
  "buttons": {
    "id": "<string>",
    "text": "<string>",
    "icon": "<string>"
  },
  "web_buttons": {
    "id": "<string>",
    "text": "<string>",
    "url": "<string>"
  },
  "thread_id": "<string>",
  "ios_relevance_score": 123,
  "android_group": "<string>",
  "adm_group": "<string>",
  "ttl": 123,
  "collapse_id": "<string>",
  "web_push_topic": "<string>",
  "data": {},
  "content_available": true,
  "ios_category": "<string>",
  "apns_push_type_override": "<string>",
  "isIos": true,
  "isAndroid": true,
  "isHuawei": true,
  "isAnyWeb": true,
  "isChromeWeb": true,
  "isFirefox": true,
  "isSafari": true,
  "isWP_WNS": true,
  "isAdm": true,
  "send_after": "<string>",
  "delayed_option": "<string>",
  "delivery_time_of_day": "<string>",
  "throttle_rate_per_minute": 123,
  "enable_frequency_cap": true,
  "idempotency_key": "<string>"
}'

{
  "id": "<string>",
  "external_id": "<string>",
  "errors": {
    "invalid_aliases": {
      "external_id": [
        "[\"user_id_1\", \"user_id_1\", \"user_id_2\"]"
      ],
      "onesignal_id": [
        "[\"1589641e-bed1-4325-bce4-d2234e578884\", \"1589641e-bed1-4325-bce4-d2234e578884\", \"1589641e-bed1-4325-bce4-d2234e578884\"]"
      ]
    },
    "invalid_player_ids": [
      "<string>"
    ]
  }
}