gistfile1.txt

curl -X POST "http://localhost:9200/users_test" -d '{ 
    "mappings" : {
        "user": {
            "dynamic_templates":[{
                "long": {
                    "match_mapping_type":"long",
                    "match":"*",
                    "mapping":{ 
                        "type":"long",
                        "include_in_all":false 
                    }
                }
            }],
            "properties" : {
                "birthdate":{"null_value":-62167392000,"type":"long"}
            }
        }
    }
}'

curl -XPUT localhost:9200/users_test/user/1 -d '{
    "birthdate" : 1
}'

curl localhost:9200/users_test/user/_mapping?pretty=true