Change the data structure of chat response according to the updates from Ozon

[Pireirik]

The example of a chat list on the Ozon API document was wrong.
The real response data has an array of chats. And there are no embedded objects inside the array. Each chat object only has keys listed below.

• chat_id
• chat_status
• chat_type
• created_at
• first_unread_message_id
• last_message_id
• unread_count.

The real response looks like the image below.

[diPhantxm]

Hi!
Seems you're right. We should really check what API returns exactly rather than read docs :)
Looks good, but you need to resolve conflicts