hmy_getBlockTransactionCountByNumber

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmy_getBlockTransactionCountByNumber",
    "params":["0x66"],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x0"
}

curl -d '{
    "jsonrpc":"2.0",
    "method":"hmyv2_getBlockTransactionCountByNumber",
    "params":[1],
    "id":1
}' -H "Content-Type:application/json" -X POST "https://api.s0.b.hmny.io"

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": 1
}