test: covering Contract API and Logs API endpoints #176

Job	Run time
API test set: accounts.test.ts / Node: lts/*	12m 55s
API test set: addresses.test.ts / Node: lts/*	13m 12s
API test set: batches.test.ts / Node: lts/*	12m 1s
API test set: blocks.test.ts / Node: lts/*	12m 8s
API test set: contracts.test.ts / Node: lts/*	12m 42s
API test set: logs.test.ts / Node: lts/*	13m 8s
API test set: stats.test.ts / Node: lts/*	12m 5s
API test set: tokens.test.ts / Node: lts/*	12m 31s
API test set: transactions.test.ts / Node: lts/*	14m 36s
	1h 55m 18s

Provide feedback