# Get feed metrics grouped by owner type

Retrieves feed metrics history for a specific operation and user, grouped by all owner types (USER, GROUP, EVENT, CATEGORY). Returns a map where keys are owner types and values are lists of feed metrics.

RBAC:
- requires ANY of Jobs.Read, Jobs.Manage

Endpoint: GET /api/v1/admin/feed/metrics/history/by-owner-type
Version: 1.0
Security: 

## Query parameters:

  - `limit` (integer)
    Maximum number of historical entries per owner type (default: 100)
    Example: 100

  - `operation` (string, required)
    Feed operation type to filter metrics
    Enum: "populate", "merge", "unmerge", "redis", "redisLex", "cache", "idsDb", "db", "add", "remove"

  - `userId` (string, required)
    User ID to retrieve metrics for
    Example: "us_01hxcvk1hjexere4pvtrj0ymqq"

## Response 403 fields (application/json):

  - `errorCode` (string, required)
    Error code

  - `message` (string, required)
    Error message

  - `docUrl` (string)
    Link to documentation