No documentation about Send Transaction BoC structure

[sadensmol]

Hi.
I recently working on application using Ton Connect, but faced some issue.
In Send Transaction message reply I have BoC as a result but no information about its structure.

In wallet codes I see they just reply with external/internal message cells concatenated, but as I can understand it depends on wallet version and wallet provider's Send Transaction method implementation - would they mind to add some additional info into BoC?

Why do we need it?
Since tx is done I need to validate it on blockchain. Until I send any message along with the transaction there is no way to validate.
So there is no common template for response's BoC and as I can understand every wallet provider make it how he likes more.

Please advice if there is nay way to check the BoC structure, if it's a standard?