A CohortLeader object looks like:

// One leader assignment on one cohort.
{
  // the ID of the assignment, used to update or remove it
  "id": 5501,
  // the cohort the assignment was returned for
  "cohort_id": 4002,
  // the leader
  "user_id": 901,
  // the root account of the cohort
  "root_account_id": 1,
  // the cohort leader role the assignment carries
  "role_id": 12,
  // the role's id, label and base_role_type (always CohortLeader)
  "role": {"id":12,"label":"Cohort Leader","base_role_type":"CohortLeader"},
  // always true; a leader's rights cannot be confined to one level
  "applies_to_descendants": true,
  // true when the assignment lives on an ancestor cohort and was returned because
  // of include_inherited
  "inherited": false,
  // the cohort the assignment actually lives on; equal to cohort_id unless
  // inherited
  "source_cohort_id": 4002,
  // the status of the assignment
  "workflow_state": "active",
  // when the assignment was created
  "created_at": "2026-09-05T13:30:00Z",
  // when the assignment was last updated
  "updated_at": "2026-09-05T13:30:00Z",
  // the leader's display fields: id, name, sortable_name and short_name, plus
  // sis_user_id, login_id and email when the caller holds read_sis (or manage_sis
  // on the root account), view_user_logins or read_email_addresses on the
  // cohort's account; each is null when the leader has no value
  "user": {"id":901,"name":"Dana Okafor","sortable_name":"Okafor, Dana","short_name":"Dana"}
}