get block by num axios

get block by num axios

> const res = await axios.post('http://63.32.250.209:9500', '{"jsonrpc":"2.0","method":"hmy_getBlockByNumber","params":["0x31e182",true],"id":1}')
Thrown:
{ Error: Request failed with status code 415
    at createError (/Users/dennis.won/go/src/github.com/harmony-one/harmony-dashboard-backend/node_modules/axios/lib/core/createError.js:16:15)
    at settle (/Users/dennis.won/go/src/github.com/harmony-one/harmony-dashboard-backend/node_modules/axios/lib/core/settle.js:17:12)
    at IncomingMessage.handleStreamEnd (/Users/dennis.won/go/src/github.com/harmony-one/harmony-dashboard-backend/node_modules/axios/lib/adapters/http.js:236:11)
    at IncomingMessage.emit (events.js:203:15)
    at IncomingMessage.EventEmitter.emit (domain.js:466:23)
    at endReadableNT (_stream_readable.js:1145:12)
    at process._tickCallback (internal/process/next_tick.js:63:19)
  config:
   { url: 'http://63.32.250.209:9500',
     method: 'post',
     data:
      '{"jsonrpc":"2.0","method":"hmy_getBlockByNumber","params":["0x31e182",true],"id":1}',
     headers:
      { Accept: 'application/json, text/plain, */*',
        'Content-Type': 'application/x-www-form-urlencoded',
        'User-Agent': 'axios/0.19.2',
        'Content-Length': 83 },
     transformRequest: [ [Function: transformRequest] ],
     transformResponse: [ [Function: transformResponse] ],
     timeout: 0,
     adapter: [Function: httpAdapter],
     xsrfCookieName: 'XSRF-TOKEN',
     xsrfHeaderName: 'X-XSRF-TOKEN',
     maxContentLength: -1,
     validateStatus: [Function: validateStatus] },

...

response:
   { status: 415,
     statusText: 'Unsupported Media Type',
     headers:
      { 'content-type': 'text/plain; charset=utf-8',
        vary: 'Origin',
        'x-content-type-options': 'nosniff',
        date: 'Thu, 14 May 2020 21:34:14 GMT',
        'content-length': '57',
        connection: 'close' },
     config:
      { url: 'http://63.32.250.209:9500',
        method: 'post',
        data:
         '{"jsonrpc":"2.0","method":"hmy_getBlockByNumber","params":["0x31e182",true],"id":1}',
        headers: [Object],
        transformRequest: [Array],
        transformResponse: [Array],
        timeout: 0,
        adapter: [Function: httpAdapter],
        xsrfCookieName: 'XSRF-TOKEN',
        xsrfHeaderName: 'X-XSRF-TOKEN',
        maxContentLength: -1,
        validateStatus: [Function: validateStatus] },
     request:
      ClientRequest {
        domain: [Domain],
        _events: [Object],
        _eventsCount: 6,
        _maxListeners: undefined,
        output: [],
        outputEncodings: [],
        outputCallbacks: [],
        outputSize: 0,
        writable: true,
        _last: true,
        chunkedEncoding: false,
        shouldKeepAlive: false,
        useChunkedEncodingByDefault: true,
        sendDate: false,
        _removedConnection: false,
        _removedContLen: false,
        _removedTE: false,
        _contentLength: null,
        _hasBody: true,
        _trailer: '',
        finished: true,
        _headerSent: true,
        socket: [Socket],
        connection: [Socket],
        _header:
         'POST / HTTP/1.1\r\nAccept: application/json, text/plain, */*\r\nContent-Type: application/x-www-form-urlencoded\r\nUser-Agent: axios/0.19.2\r\nContent-Length: 83\r\nHost: 63.32.250.209:9500\r\nConnection: close\r\n\r\n',
        _onPendingData: [Function: noopPendingOutput],
        agent: [Agent],
        socketPath: undefined,
        timeout: undefined,
        method: 'POST',
        insecureHTTPParser: undefined,
        path: '/',
        _ended: true,
        res: [IncomingMessage],
        aborted: undefined,
        timeoutCb: null,
        upgradeOrConnect: false,
        parser: null,
        maxHeadersCount: null,
        _redirectable: [Writable],
        [Symbol(isCorked)]: false,
        [Symbol(outHeadersKey)]: [Object] },
     data: 'invalid content type, only application/json is supported\n' },
  isAxiosError: true,
  toJSON: [Function] }