Issue Summary

The next page's value in the following API call is not a digit, but rather random characters

Steps to Reproduce

Run the following API call:
https://api.bitbucket.org/2.0/user/permissions/repositories?pagelen=100&q=permission%3E%22read%22

Expected Results

The value for the next page supposed to be &page=2:
https://api.bitbucket.org/2.0/user/permissions/repositories?pagelen=100&q=permission%3E%22read%22&page=2

Actual Results

The next page's value is actually not &page=2, but &page=67sER
https://api.bitbucket.org/2.0/user/permissions/repositories?q=permission%3E%22read%22&pagelen=100&page=67sER

Third page is not &page=3, but:
https://api.bitbucket.org/2.0/user/permissions/repositories?q=permission%3E%22read%22&pagelen=100&page=znuod

Workaround

To use the random characters as description for the next page