curl --request GET \
  --url https://api.pulsewave.dev/v1/contacts \
  --header 'Authorization: Bearer <token>'

{
  "object": "list",
  "data": [
    {
      "id": "ct_5n2p9x",
      "object": "contact",
      "email": "jsmith@example.com",
      "phone_number": "<string>",
      "first_name": "<string>",
      "last_name": "<string>",
      "subscribed": true,
      "metadata": {},
      "created_at": "2023-11-07T05:31:56Z"
    }
  ],
  "has_more": true
}