client_account_code
package_name
day_of_renew

curl -X POST \-H "Authorization: Token d37fa8c4e008fec158070b1b4aea5f0db3d6a06e" \-H "Content-Type: application/json" \
-d '{"client_account_code":"2144533795","package_name": "USA 5000", "day_of_renew": "01"}' \
-k https://your.domain.com/api/users/package_assign 

 {
  "status": "success"
}