Start sms campaign v2

curl --location 'https://{{host}}/campaign/api/v2/public/{{IID}}/campaign/{{campaignId}}?campaignType=sms&trigger={{trigger}}' \
--header 'auth: <token>' \
--header 'accountid: 67777ce93e25326494exxxxx' \
--header 'iid: st-0603182c-7ffb-53c3-b307-47ca14bxxxxx' \
--header 'Content-Type: application/json' \
--data '{}
'

{
    "status": "Active",
    "message": "Campaign Started",
    "updatedAt": "2025-12-05T12:05:23.765Z"
}