feat: Tx sign in Keplr

[Senna46]

No description provided.

[Senna46]

The signing in Keplr looks work and breaks through the simulation, but errors occur in main transactions.
An error has occur: Error: signature verification failed; please verify account number (127) and chain-id (ununifi-8-private-test): unauthorized

[Senna46]

This API response is correct, isn't it?
pub_key field is null.

account: {@type: "/cosmos.auth.v1beta1.BaseAccount", address: "ununifi1hn58ys5xzj8u486azf2ve7fg7jcegrl7hgvj74",…}
@type: "/cosmos.auth.v1beta1.BaseAccount"
account_number: "127"
address: "ununifi1hn58ys5xzj8u486azf2ve7fg7jcegrl7hgvj74"
pub_key: null
sequence: "0"

[kimurayu45z]

The address which haven't announced transactions can't be created the relation with the public key which can be obtained from the signature in transactions, so there is no route to get pubkey from address and it is regular working

[Senna46]

OK, Thanks.
So, the problem is the signature....