Querying Dynamo which have list attribute

Question

Need to query with mac_addr , such as:

Find all data with devices & mac_addr

but as suggested in dynamo, for querying we can't use list.

Device JSON

{
   "issuer" : "device.stn100bom.ctr.sophos.com"
   "id" : "5ef29826-3b7a-11ed-a261-0242ac120002" 
   "aid" : "65d30626-3b7a-11ed-a261-0242ac120002"
   "mac_addr" : ["82:c5:50:a7:ac:01",...] 
}

One possible option could be creating a separate table, which has deviceId and mac_addr , acting as a lookup table.

Please suggest if there is a better option available.