Search in arrays always return only 2 hits?

I’m trying to use the full-text search to find matching ids, from an array.
This works:

SELECT data FROM products_cb289f89_6dd2_4cce_89ec_09b443ce1d17 where id in (3515,3512,1541,1543)

But I’m unable to get the POST /search to work:

{
  "query": {
    "bool": {
      "must": [
        {
          "equals": {
            "any(id)": [
              3515,
              3512,
              1541,
              1543
            ]
          }
        }
      ]
    }
  },
  "index": "products_cb289f89_6dd2_4cce_89ec_09b443ce1d17",
  "size": 100
}

No matter what I do, the result is always only 2 hits.
Am I using it wrong when searching for matching ids?

Here’s an example with the corrected query:

mysql -P9306 -h0 -e "drop table if exists t; create table t; insert into t(id) values(3515),(3512),(1541),(1543);"

➜  ~ curl -sX POST http://localhost:9308/search  -d '
{
  "query": {
    "in": {
      "id": [3515, 3512, 1541, 1543]
    }
  },
  "index": "t",
  "size": 100
}' | jq .

{
  "took": 0,
  "timed_out": false,
  "hits": {
    "total": 4,
    "total_relation": "eq",
    "hits": [
      {
        "_id": "3515",
        "_score": 1,
        "_source": {}
      },
      {
        "_id": "3512",
        "_score": 1,
        "_source": {}
      },
      {
        "_id": "1541",
        "_score": 1,
        "_source": {}
      },
      {
        "_id": "1543",
        "_score": 1,
        "_source": {}
      }
    ]
  }
}

Aah, ok, I got confused by the documentation because I thought only about the first set of search where all of them have the bool and must. And then I was searching for array searches, but i should have searched for Sets as mentioned here: Manticore Search Manual: Searching > Filters

Thanks for the quick reply!