Fix eth_subscribe to logs, add remaining chains to cli tool (#256)

src/main/kotlin/io/emeraldpay/dshackle/rpc/NativeSubscribe.kt

@@ -97,7 +97,11 @@ open class NativeSubscribe(
     }
 
     open fun subscribe(chain: Chain, method: String, params: Any?, matcher: Selector.Matcher): Flux<out Any> =
-        getUpstream(chain).getEgressSubscription().subscribe(method, params, matcher)
+        getUpstream(chain).getEgressSubscription()
+            .subscribe(method, params, matcher)
+            .doOnError {
+                log.error("Error during subscription to $method, chain $chain, params $params", it)
+            }
 
     private fun getUpstream(chain: Chain): EthereumLikeMultistream =
         multistreamHolder.getUpstream(chain).let { it as EthereumLikeMultistream }

src/main/kotlin/io/emeraldpay/dshackle/upstream/ethereum/EthereumEgressSubscription.kt

@@ -93,6 +93,7 @@ open class EthereumEgressSubscription(
                         null
                     }
                 }
+                null -> emptyList()
                 else -> throw IllegalArgumentException("Invalid type of address field. Must be string or list of strings")
             }
         } else {
@@ -114,6 +115,7 @@ open class EthereumEgressSubscription(
                         null
                     }
                 }
+                null -> emptyList()
                 else -> throw IllegalArgumentException("Invalid type of topics field. Must be string or list of strings")
             }
         } else {