connection to query state from
account whose state is viewed
allows to filter which keys should be returned. Empty prefix means all keys. String prefix is utf-8 encoded.
specifies which block to query state at. By default returns last "optimistic" block (i.e. not necessarily finalized).
Returns the state (key value pairs) of account's contract based on the key prefix. Pass an empty string for prefix if you would like to return the entire state.