curl --request POST \
  --url https://api.sandbox.saalal.com/v1/disputes/update/{reference} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "transaction_slug": "962b954d-bbd3-4b03-8a70-80fb595e9049",
  "explanation": "No real explanation even now"
}'

{
  "message": "dispute successfully updated!",
  "statusCode": 200,
  "data": [
    {
      "transaction_slug": "962b954d-bbd3-4b03-8a70-80fb595e9049",
      "slug": {
        "reference": null
      },
      "status": "submitted",
      "reason": "duplicate",
      "explanation": "No real explanation even now"
    }
  ]
}