Get candidates information

Example response

{
  "items": [
    {
      "_id": "123",
      "candidate": "0x11621900588eca4410c00097a9f59237f34064cd",
      "smartContractAddress": "0x0000000000000000000000000000000000000088",
      "__v": 0,
      "capacity": "91540333800000001000000",
      "createdAt": "2018-10-31T03:42:39.375Z",
      "owner": "0x11621900588eca4410c00097a9f59237f34064cd",
      "status": "RESIGNED",
      "updatedAt": "2019-01-11T09:21:55.028Z",
      "latestSignedBlock": 2917487,
      "capacityNumber": 91540.33380000001,
      "isMasternode": false,
      "isPenalty": false
    }
  ],
  "total": 100,
  "activeCandidates": 10
}