What is the best practice to implement CQRS with elasticsearch in microservices style?

I'm trying to implement CQRS architecture in Microservices style, what I've decided is to use elastic search and READ and Postgresql as our WRITE database.

By the ‌assumption that we have 3 microservices and every microservice has 1 database

     user table 
                    
 id |   name   | age 
----+----------+------
  1 | Robert   |  30
  2 | Jessica  |  40
  3 | Jennifer |  50
  4 | Jack     |  600

       event

 id | user_id | event_name 
----+---------+------
  1 |    3    |  python
  2 |    4    |  elasticsearch
  3 |    2    |  postgres
  4 |    2    |  cqrs

      finantial

 id | user_id |  cash 
----+---------+------
  1 |     1   |  30
  2 |     2   |  40
  3 |     3   |  50
  4 |     4   |  600

I don't know,but I think the structure below for elasticsearch is good

PUT test
{
  "mappings": {
    "properties": {
      "name": {
        "type": "text"
      },
      "age":{
        "type": "integer"
      },
      "events": {
        "type": "nested"
     },
      "cash": {
        "type": "integer"
      }
    }
  }
  
}

Now what is the best practice to implement data structure in elasticsearch index ?