callback url not working when document signed by user in adobe sign using api

When the document is signed by user , I want the status of document to be updated by calling our api that is maintained on our end. I tried to pass callback url and also tried to specify the postSIgn options. But none of the option is working.

Data posted for creating aggrement -

{

"documentCreationInfo":

{"fileInfos":[{"transientDocumentId":"3AAABLblqZhCeLFuo4oJCCCFZZ8WtAS7cv0UZ7ICdcMP1g94Zd8N9cK5whN-1pWQj4C2n2j5niAVIp6UA5ud1mdA2TCAG0bYsPdnzs0sWCZpyja5eg5S-8_Hwlqazlw6hPShJJIY8_sixX0IdLLr7tFkwkhcKmOECAW_3KwuxzCbsvmWHRYtgspohE65xHl8D-S9vtA_y25aOBxyxKvcKLbAkDMlZCs8aNRPQmSaueVlTuWs7JRQcCLRg2EO8f7Cn00eZ36XdWnVcYXAGd3MtuUwyqhgotFVmrMbEWIHnxeQxgI4512vxQENJNgcBLh3qElUkVYVmIhg*"

}],

"callbackInfo": "https://dev/crm/3e2fee7c-3081-404d-9511-52f13d4c4a58/wonOpportunity/6",

               "name":"MyTestAgreement", "recipientSetInfos":[{"recipientSetMemberInfos":[{"email":"raggarwal@bsl-i.com","fax":""}],

               "recipientSetRole":"SIGNER"}],"signatureType":"ESIGN","signatureFlow":"SENDER_SIGNATURE_NOT_REQUIRED"},

"postSignOptions" :{

"redirectUrl" : "https://www.google.co.in/"

}

}

Is there any other method through which we can redirect the user after signing to our api or I am missing something in above posted data?