[{"content":{"merchantName":"SAMPLE_MERCHANT_NAME","merchantId":"SAMPLE_MERCHANT_ID","items":[{"_id":"SAMPLE_ID","title":"SAMPLE TITLE",}]},"_id":"618220e83966345ab5d451cd","__v":0},]

db.collection.update({"content.merchantId":"SAMPLE_MERCHANT_ID"},{$pull:{"content.items":{"_id":"SAMPLE_ID"}}},{new:true},)