curl --request PATCH \
  --url https://app.tryspecter.com/api/v1/lists/people/{listId} \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <api-key>' \
  --data '{
  "add_ids": [
    "per_5e3a7f2b0aa7a3270a55f2a7"
  ],
  "delete_ids": [
    "per_5e3a7f2b0aa7a3270a55f2a7"
  ]
}'

{
  "id": "b73c8bed-3b92-48f9-a879-40ee114dca03",
  "name": "Favourites",
  "created_at": "2024-11-14T10:36:12.625Z",
  "updated_at": "2024-11-14T10:36:12.625Z",
  "people": [
    {
      "person_id": "per_2f3c7fe468ec9fc2181bec8b",
      "created_at": "2025-01-02T17:29:46.688Z"
    }
  ]
}