Google account | Type the user name of the Google administrative account that you have used to create the service account that you will now use for API access. The domain name that you have entered in the previous dialog box is displayed. |
Email address | Click [...], browse, and then select the JSON file that contains the client email address of the same service account. Alternatively, type the service account client email address. |
Private Key | Click [...], browse, and then select the PKCS12-format (or P12) private key generated for the same service account. This private key is a binary file with a .p12 extension. |