curl --request PUT \
  --url https://api.comm.com/api/v1/sms/routing/blacklist/{blacklist} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "reason": "<string>"
}
'

{
  "data": {
    "id": "<string>",
    "sms_route_id": "<string>",
    "company_id": "<string>",
    "country_id": "<string>",
    "reason": "<string>",
    "team_id": "<string>",
    "created_by": "<string>",
    "created_at": "<string>",
    "updated_at": "<string>",
    "sms_route": "<string>",
    "company": "<string>",
    "country": "<string>",
    "created_by_user": "<string>"
  }
}