curl --location --request DELETE 'https://open.yunxinapi.com/im/v2/broadcast_notification/' \
--header 'AppKey: ' \
--header 'X-custom-traceid: {% mock '\''uuid'\'' %}' \
--header 'Nonce: ' \
--header 'CurTime: ' \
--header 'CheckSum: '{
"code": 0,
"msg": "string",
"data": {
"content": "string",
"from_account_id": "string",
"offline_enabled": true,
"ttl": 0,
"target_os": "string",
"broadcast_id": "string",
"create_time": 0,
"expire_time": 0,
"client_broadcast_id": "string",
"sender_id": "string",
"extension": "string",
"resend_flag": 0
}
}