List staking contracts

{
    "success": true,
    "data": [
        {
            "currencyCode": "KAVA",
            "amount": 75,
            "reward": 0.01027898,
            "lockedReward": 0,
            "startDate": 1590582716,
            "variations": [
                {
                    "amount": 75,
                    "date": 1590582716,
                    "effectiveDate": 1590669116,
                    "applied": 1
                }
            ],
            "credits": [
                {
                    "amount": 0.00432936,
                    "date": 1590710400,
                    "releaseDate": false,
                    "released": 1
                },
                {
                    "amount": 0.00594962,
                    "date": 1590624000,
                    "releaseDate": false,
                    "released": 1
                }
            ]
        },
        {
            "currencyCode": "SNX",
            "amount": 500,
            "reward": 0,
            "lockedReward": 0,
            "startDate": 1590594695,
            "variations": [
                {
                    "amount": 500,
                    "date": 1590594695,
                    "effectiveDate": 1590681095,
                    "applied": 1
                }
            ],
            "credits": []
        }