Get a chat session

curl --request GET \
  --url https://api.open.cx/chat/sessions/{session_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "status": "open",
  "channel": {
    "type": "web"
  },
  "contact": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "email": "jsmith@example.com",
    "phone_number": "<string>",
    "name": "<string>",
    "custom_data": {}
  },
  "language": "<string>",
  "assignee_id": "<string>",
  "handoff": {
    "sentiment": "angry",
    "summary": "<string>"
  },
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z"
}