ctx.EventManager().EmitEvent(
    sdk.NewEvent(
        sdk.EventTypeMessage,
        sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
        sdk.NewAttribute(sdk.AttributeKeySender, `signer/sender`),
    ),
)
canto-main/x/coinswap/keeper/msg_server.go
 59    ctx.EventManager().EmitEvent(
 60       sdk.NewEvent(
 61          sdk.EventTypeMessage,
 62          sdk.NewAttribute(sdk.AttributeKeyModule, types.AttributeValueCategory),
 63          sdk.NewAttribute(sdk.AttributeKeySender, msg.Sender),
 64       ),
