Durable Objects query

Hello, do storage queries support nested keys?
ex. storage looks like this:

{
messages: {
     "mkey1": "....",
     "mkey2": "....",
     }
}

{
messages: {
     "mkey1": "....",
     "mkey2": "....",
     }
}

{
messages: {
     "mkey1": "....",
     "mkey2": "....",
     }
}

{
messages: {
     "mkey1": "....",
     "mkey2": "....",
     }
}

is it possible to just get mkey1 without getting all messages?