Return top credit card brands for lookup of up to 5 first digits. It covers 90% of the cases

The result is an array of 5 elements, where each element represents iin prefixes for a givel size as well as the list of logo Url's for all brands.
Each element in the top-level array is an object where members are prefixes and data is the brand.
For a quick lookup:

1. get the element by the size of your prefix.
2. try to obtain the prefix as a member name; The member value is the brand

For logo lookup finf thr brand name as the key to the logos member.
If not found, you can try using 'DEFAULT'.