curl --request POST \
  --url https://api.dev.tpinf.in/takeprofit.partner.external.security.v1.LinkApi.GetLinkedSecurity \
  --header 'Content-Type: application/json' \
  --data '{
  "security_guid": "6ef11658-5a1c-4baf-9387-d977dcca6129"
}'

{
  "linked_security": {
    "security_guid": "6ef11658-5a1c-4baf-9387-d977dcca6129",
    "partner_security_id": "124"
  }
}