It looks like you are trying to use your knowledge of relational databases with non-SQL databases such as Elasticsearch (ES). There are several options.
№1. , . , . ( ), ES. , ES , , / ES.
№2. types
id/ id/keys, index
. :
a) id
;
b) , email
( id
a), , Kibana id
c) , keys
( , id
email
, , , )
№ 3. , , indices
types
. (, docs-email
docs-keys
),
№ 4. , . ES API REST . , , ( , ES ).