Amazon triple containing

Hi, I'm very glad to find you on this website. I'm a developer from China. Now I does working on Bluetooth Sigmesh . I plan to access the Amazon echo for my device , and then I recgnized before I need the BLE Mesh Credentials- A triple containing the OOB Type (Static only for now), OOB Data (pub key), and Device UUID. But I has clicked entire website still connot find out the documentation for how to get my triple containing. May I get some help form you , very appreciate.