Get the number of transactions sent from an address.
curl "https://api.etherscan.io/v2/api?chainid=1&module=proxy&action=eth_getTransactionCount&address=0x4bd5900Cb274ef15b153066D736bf3e83A9ba44e&tag=latest&apikey=YourApiKeyToken"
{ "jsonrpc": "2.0", "id": 1, "result": "0x73" }
1
8453
proxy
eth_getTransactionCount
latest
earliest
pending