AWS Elasticache: LETTUCE - How to read from cache without providing a Key

Question

We are using Lettuce java client to connect to AWS Elasticache (Valkey engine, Serverless, version 8.0) from Java springboot application (JDK 17 & springboot version 3.2.5)

We have User information stored in cache with userId as cache key & the whole user object (in JSON format) as cache value. Example key value given below.

key = user:100 
value =
{
 "userId": 100,
 "firstName": "James",
 "lastName": "Paul",
 "mobile": 5349997236
}

We can read from cache using jsonGet() by providing cache key. But I want to read from cache using other fields like, I want to retrieve all the users who have firstName = "James" WITHOUT providing cache key.

Is this possible to filter cache values using internal json fields instead of cache key?