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string key = 1
bytes addr = 2
bytes fromAddress = 1
string paramKey = 2
bytes paramVal = 3
bytes fromAddress = 1
bytes toAddress = 2
string amount = 3
string action = 4
bytes address = 1
optional Upgrade upgrade = 2
Used in: MsgUpgrade
int64 height = 1
string version = 2
int64 oldUpgradeHeight = 3
repeated string features = 4