Cosmos SQL API: filter based an array entry

Author: Angela

Originally Sourced from:

Given the json

    "fileIds": [
    "eventType": 8,
    "description": "File deleted from original storage account",
    "registerTimeUtc": "0001-01-01T00:00:00",
    "customerId": "c7b00078-8fd7-49ad-989a-2fabcb767f6e",
    "applicationId": "266c6ca3-e77c-4233-b780-b8dd69aa7349"


I need to check if an entry exists based on a given applicationId, eventType and fileId and I do not know how to write the query based on fileId to check its existence in the array list.