Requirement to display the e-signature,ip address once the external candidate accepts offer letter

Summary:

We have a requirement to display the e-signature , ip address once the external candidate accepts the Offer letter and when they download the 

Offer letter from the download button available after acceptance.

We have tried fetching the data from the table IRC_ESIGNATURES but e-signature, ip address gets populated once the cadidate accepts the 

Offer Letter and that offer letter goes into the DOR , there these data is available.

Apart from this we need this data after the candidate accepts the offer letter also... and here we are not able to know how to get this data...

Can anyone please help me with the solution.