works here:
2018-03-12 15:41:09,196 - grapheneapi.graphenehttprpc - DEBUG - {"method": "call", "params": [0, "get_chain_properties", []], "jsonrpc": "2.0", "id": 1}
2018-03-12 15:41:09,244 - grapheneapi.graphenehttprpc - DEBUG - "{\"id\":1,\"jsonrpc\":\"2.0\",\"result\":{\"id\":\"2.11.0\",\"chain_id\":\"39f5e2ede1f8bc1a3a54a7914414e3779e33193f1f5693510e73cb7a87617447\",\"immutable_parameters\":{\"min_committee_member_count\":11,\"min_witness_count\":11,\"num_special_accounts\":0,\"num_special_assets\":0}}}"
2018-03-12 15:41:09,244 - grapheneapi.graphenehttprpc - DEBUG - {"method": "call", "params": ["asset", "get_asset_holders", ["1.3.0", "0", "10"]], "jsonrpc": "2.0", "id": 2}
2018-03-12 15:41:10,447 - grapheneapi.graphenehttprpc - DEBUG - "{\"id\":2,\"jsonrpc\":\"2.0\",\"result\":[{\"name\":\"faucet\",\"account_id\":\"1.2.17\",\"amount\":\"664998526582542\"},{\"name\":\"svk-firefox\",\"account_id\":\"1.2.780\",\"amount\":\"30100687995802\"},{\"name\":\"f0x\",\"account_id\":\"1.2.792\",\"amount\":\"30098444449652\"},{\"name\":\"xeroc\",\"account_id\":\"1.2.29\",\"amount\":\"28004114538350\"},{\"name\":\"market-maker\",\"account_id\":\"1.2.30\",\"amount\":\"10000002000020\"},{\"name\":\"testnet-a\",\"account_id\":\"1.2.1227\",\"amount\":\"3739647293923\"},{\"name\":\"init0\",\"account_id\":\"1.2.6\",\"amount\":\"2976759392060\"},{\"name\":\"maker\",\"account_id\":\"1.2.104\",\"amount\":\"1051490159462\"},{\"name\":\"heroku-bot\",\"account_id\":\"1.2.654\",\"amount\":\"1000001999430\"},{\"name\":\"testz3\",\"account_id\":\"1.2.820\",\"amount\":\"989001994059\"}]}"
[{'account_id': '1.2.17', 'amount': '664998526582542', 'name': 'faucet'},
{'account_id': '1.2.780', 'amount': '30100687995802', 'name': 'svk-firefox'},
{'account_id': '1.2.792', 'amount': '30098444449652', 'name': 'f0x'},
{'account_id': '1.2.29', 'amount': '28004114538350', 'name': 'xeroc'},
{'account_id': '1.2.30', 'amount': '10000002000020', 'name': 'market-maker'},
{'account_id': '1.2.1227', 'amount': '3739647293923', 'name': 'testnet-a'},
{'account_id': '1.2.6', 'amount': '2976759392060', 'name': 'init0'},
{'account_id': '1.2.104', 'amount': '1051490159462', 'name': 'maker'},
{'account_id': '1.2.654', 'amount': '1000001999430', 'name': 'heroku-bot'},
{'account_id': '1.2.820', 'amount': '989001994059', 'name': 'testz3'}]