Unable to load nested datatype using Logstash

[Rory]

I am trying to load data from SQL Server to ES. I have stored in a column in SQL, data in the following format:

[{"addressid":1,"addressvalue":"123 abc st"},{"addressid":2,"addressvalue":"456 pqr st"}]

The name of the column in SQL is addresses.

When I try to load data to ES using logstash jdbc plugin, I get the following error:

"reason"=>"object mapping for [addresses] tried to parse field [addresses] as object, but found a concrete value"

My ES Index mapping is as follows:

{
  "myindex": {
    "mappings": {
      "person": {
        "_all": {
          "enabled": false
        },
        "properties": {
          "addresses": {
            "type":"nested",
            "properties": {
              "addressid": {
                "type": "long"
              },
              "addressvalue": {
                "type": "keyword",
                "store": true,
                "ignore_above": 60
              }
            }
          },
          "state": {
            "type": "keyword",
            "store": true,
            "ignore_above": 2
          },
          "uid": {
            "type": "long"
          }
        }
      }
    }
  }
}

Am I doing something wrong?

Thanks.