impr: Process transaction validation in the message server

[JanLewDev]

Resource: https://docs.cosmos.network/v0.50/build/building-modules/msg-services#validation

[sfroment]

I am applying to this issue via OnlyDust platform.

My background and how it can be leveraged

👋 it's me again, once the previous PR is good I'm okay if we assign me this one :)