Lister les membres

{
  "data": [
    {
      "id": "mem_123abc",
      "role": "admin",
      "email": "john.doe@example.com",
      "status": "active",
      "user_id": "usr_456def",
      "created_at": "2026-01-15T10:30:00Z"
    },
    {
      "id": "mem_789ghi",
      "role": "developer",
      "email": "jane.smith@example.com",
      "status": "pending",
      "user_id": null,
      "created_at": "2026-01-20T14:22:00Z"
    }
  ],
  "object": "list"
}