curl --request POST \
  --url https://api.example.com/v1/crm/integrations/{slug}/connect/ \
  --header 'Content-Type: application/json' \
  --data '
{
  "demo": true,
  "connected": true,
  "extra": "<unknown>"
}
'

{
  "id": 123,
  "integration_period": {
    "id": 123,
    "variant": {
      "id": 123,
      "name": "<string>",
      "code": "<string>",
      "limits": [
        "<string>"
      ]
    },
    "integration": 123,
    "type": "period",
    "currency": "KZT",
    "days": 30,
    "price": "<string>",
    "amount": -1,
    "tenant": 123
  },
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z",
  "start_at": "2023-11-07T05:31:56Z",
  "end_at": "2023-11-07T05:31:56Z",
  "tenant": 123,
  "integration": 123,
  "demo": true,
  "connected": true,
  "extra": "<unknown>"
}