JSON RPC layer

[kamikazechaser]

Add support for:

• eth_sendTransaction
• eth_sign

Any other useful JSON RPC method commonly consumed by wallets.

• https://github.com/mrFokin/jrpc

[kamikazechaser]

curl http://localhost:5003/api/v2/jrpc \
                      -X POST \
                      -H "Content-Type: application/json" \
                      -H "Authorization: Bearer eyJhbGciOiJFZERTQSIsInR5cCI6IkpXVCJ9.eyJwdWJsaWNLZXkiOiIweDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAwMDAiLCJzZXJ2aWNlIjp0cnVlLCJpc3MiOiJldGgtY3VzdG9kaWFsLWRldiIsInN1YiI6ImxvY2FsZGV2IiwiZXhwIjoxNzY0OTE5MDE4LCJpYXQiOjE3MzMzODMwMTh9.VPDUq4drogHCNM2zu4CxA0dcMrOJPtjCry1IJenUBrz_yZH9kn3QGJYoVL3_l3cYJS2kfxJxSJDA91uJwzvsBQ" \
                      -d '{
            "jsonrpc": "2.0",
            "id": 0,
            "method": "eth_sendTransaction",
            "params": [
              {
                "from": "0x742d35cc6634c0532925a3b844bc454e4438f44e",
                "to": "0x853d955acef822db058eb8505911ed77f175b99e",
                "value": "0xde0b6b3a7640000",
                "data": "0x"
              }
            ]
          }'
{"jsonrpc":"2.0","result":"0x0000000000000000000000000000000000000000000000000000000000000000","id":0}