Replace specific keys in a deeply embedded json file

I have a json file (origin.json) generated locally, I'd like to replace some keys in this origin.json and generate a remote.json so that I could send it to a remote server following it's endpoint payload format.

My origin.json is large and deeply embedded, I could iterate each keys and replace those I need to. But I am wondering is there an efficient and fancy tool could do the same? Something like jq?

Below are my embedded json

{"timeoutMs": 3000,"requestTopic": "local-cron","searchQuery": {"checkin": "2023-01-10","checkout": "2023-01-11","numberRoomsNeeded": 0,"adultsTotal": 2,"childrenTotal": 0,"currency": "EUR"        },"requestContext": {"userId": 666666666,"userAuthLevel": 2,"isUserstar": true,"visitorCc1": "cn","trafficSourceId": 0,"siteTypeId": 9,"detectedUserType": "normal","travelPurpose": 2,"affiliateId": 12345,"languageCode": "en-us","currency": "CNY","siteType": 1,"serverRole": "cron","action": "bp","visitorIdentifier": [                {"type": "id-single","uvi": "00000000000000000000000"                },                {"type": "user-identity","uvi": "66666666"                },                {"type": "user","uvi": "77777777777"                }            ],"isInternal": true,"enableExperiments": true,"shouldTrackRequestInExperiments": true,"starSettings": {"isUserstar": true,"isUserstarControlGroup": false,"canStarUserSeeFreeBreakfast": true,"canStarUserSeeFreeRoomUpgrade": true,"starTier": 5,"topstarBenefit": "","isRightstar": true,"starDynamicPricing": {"canSeestarDynamicPricingLevel3": true                },"canStarUserSeeFreeCleaningFee": true,"starVipSettings": [                    {"eligible": true,"benefitName": "no_et","programType": "PriceMatchTrial","percentage": 0                    }                ]            },"isCsRelocationMode": false,"tripValueContext": {},"visitorCountryRegion": "sh","paymentTiming": 1,"includeConditional": false        },"showDebug": false,"hits": [            {"hhhhid": 8228082,"ppblock": {"allMatchingBlocks": [                        {"blockId": 1,"rawBlock": {"occupancy": 2,"price": 34425,"roomId": 822808201,"policygroupId": 346547507,"mealplan": 2,"channel": 581,"currencyId": 2,"maxPersons": 3,"flags": 0,"freeCancelUntil": 0,"priceBase10Exponent": -2,"packageId": 0,"paymenttermsId": 38,"vrFlags": 0,"bundleId": 0                            },"blockStay": {"stayNights": [                                    {"polId": 346547507,"rateId": 25728208,"curId": 2,"price": 344.25,"price1": 0,"channelId": 581,"occupancy": 2,"roomId": 822808201,"initialPrice": 405,"initialPrice1": 0                                    }                                ],"stayNrRooms": 1,"stayAvailableUntil": 1956105,"stayPrice": 344.25,"stayFlashDeal": 0,"stayPromoTextId": 0,"stayMinAdvanceRes": 1673388000,"stayInventorySegmentId": 0,"stayExperimentFlags": 0,"stayRoomRateFlags": 4,"stayIncludedProducts": 0                            }                        }                        ]                    },"selectedBlocks": ["822808201_346547507_2_2_0"                    ],"selected": {"822808201_346547507_2_2_0": 1                    }                }            ],"pipeline": 3}

Here I flagged several keys I'd like to replace with '==> (new key)'

jq '.. | keys?' star-dragongate.json ["hits","pipeline","requestContext","requestTopic","searchQuery","showDebug", ==> showdebug "timeoutMs"]["adultsTotal","checkin","checkout","childrenTotal","currency","numberRoomsNeeded"]["action","affiliateId", ==> Affilateid"currency","detectedUserType","enableExperiments","starSettings","includeConditional","isCsRelocationMode","isInternal","isUserstar","languageCode","paymentTiming","serverRole","shouldTrackRequestInExperiments", ==> inexperiments"siteType","siteTypeId","trafficSourceId","travelPurpose","tripValueContext","userAuthLevel","userId","visitorCc1","visitorCountryRegion","visitorIdentifier"][  0,  1,  2]["type","uvi"]["type","uvi"]["type","uvi"]["canStarUserSeeFreeBreakfast","canStarUserSeeFreeCleaningFee","canStarUserSeeFreeRoomUpgrade",  ==> freeroom_upgrade"starDynamicPricing","starTier","starVipSettings","isRightstar","isUserstar","isUserstarControlGroup","topstarBenefit"]["canSeestarDynamicPricingLevel3"][  0]["benefitName","eligible","percentage","programType"][][  0]["hhhhid","ppblock","selected","selectedBlocks"]["allMatchingBlocks"][  0]["blockId","blockStay","rawBlock"]["bundleId",  ==> bundle_id"channel","currencyId","flags","freeCancelUntil","maxPersons","mealplan","occupancy","packageId","paymenttermsId","policygroupId","price","priceBase10Exponent","roomId","vrFlags"]["stayAvailableUntil","stayExperimentFlags","stayFlashDeal","stayIncludedProducts","stayInventorySegmentId","stayMinAdvanceRes","stayNights","stayNrRooms","stayPrice","stayPromoTextId", ==> staypromotextid"stayRoomRateFlags"][  0]["channelId","curId","initialPrice","initialPrice1","occupancy","polId","price","price1","rateId","roomId"][  0]["822808201_346547507_2_2_0"]

The keys I need to replace located in different embed layer and blocks of this json.

Is there any suggestion on how to replace those keys in an efficient way ?

PS: The keys in json file are in static location, not dynamically change all the time.