[
    {
        "inputs": [
            {
                "internalType": "address",
                "name": "_recipient",
                "type": "address"
            },
            {
                "internalType": "uint256",
                "name": "_amount",
                "type": "uint256"
            },
            {
                "internalType": "uint256",
                "name": "_timestamp",
                "type": "uint256"
            },
            {
                "internalType": "uint256",
                "name": "_nonce",
                "type": "uint256"
            },
            {
                "internalType": "bytes",
                "name": "_signature",
                "type": "bytes"
            }
        ],
        "name": "distributeSingleReward",
        "outputs": [],
        "stateMutability": "nonpayable",
        "type": "function"
    },
    {
        "inputs": [
            {
                "internalType": "contract IERC20",
                "name": "_sttToken",
                "type": "address"
            },
            {
                "internalType": "uint256",
                "name": "_validDuration",
                "type": "uint256"
            },
            {
                "internalType": "address",
                "name": "_signer",
                "type": "address"
            }
        ],
        "stateMutability": "nonpayable",
        "type": "constructor"
    },
    {
        "anonymous": false,
        "inputs": [
            {
                "indexed": true,
                "internalType": "address",
                "name": "previousOwner",
                "type": "address"
            },
            {
                "indexed": true,
                "internalType": "address",
                "name": "newOwner",
                "type": "address"
            }
        ],
        "name": "OwnershipTransferred",
        "type": "event"
    },
    {
        "inputs": [],
        "name": "pause",
        "outputs": [],
        "stateMutability": "nonpayable",
        "type": "function"
    },
    {
        "anonymous": false,
        "inputs": [
            {
                "indexed": false,
                "internalType": "address",
                "name": "account",
                "type": "address"
            }
        ],
        "name": "Paused",
        "type": "event"
    },
    {
        "inputs": [],
        "name": "renounceOwnership",
        "outputs": [],
        "stateMutability": "nonpayable",
        "type": "function"
    },
    {
        "anonymous": false,
        "inputs": [
            {
                "indexed": true,
                "internalType": "address",
                "name": "recipient",
                "type": "address"
            },
            {
                "indexed": false,
                "internalType": "uint256",
                "name": "amount",
                "type": "uint256"
            },
            {
                "indexed": false,
                "internalType": "uint256",
                "name": "timestamp",
                "type": "uint256"
            },
            {
                "indexed": false,
                "internalType": "uint256",
                "name": "nonce",
                "type": "uint256"
            }
        ],
        "name": "RewardDistributed",
        "type": "event"
    },
    {
        "inputs": [
            {
                "internalType": "address",
                "name": "newOwner",
                "type": "address"
            }
        ],
        "name": "transferOwnership",
        "outputs": [],
        "stateMutability": "nonpayable",
        "type": "function"
    },
    {
        "inputs": [],
        "name": "unpause",
        "outputs": [],
        "stateMutability": "nonpayable",
        "type": "function"
    },
    {
        "anonymous": false,
        "inputs": [
            {
                "indexed": false,
                "internalType": "address",
                "name": "account",
                "type": "address"
            }
        ],
        "name": "Unpaused",
        "type": "event"
    },
    {
        "inputs": [
            {
                "internalType": "address",
                "name": "_newSigner",
                "type": "address"
            }
        ],
        "name": "updateSigner",
        "outputs": [],
        "stateMutability": "nonpayable",
        "type": "function"
    },
    {
        "inputs": [],
        "name": "cooldownPeriod",
        "outputs": [
            {
                "internalType": "uint256",
                "name": "",
                "type": "uint256"
            }
        ],
        "stateMutability": "view",
        "type": "function"
    },
    {
        "inputs": [
            {
                "internalType": "address",
                "name": "",
                "type": "address"
            }
        ],
        "name": "lastCallTime",
        "outputs": [
            {
                "internalType": "uint256",
                "name": "",
                "type": "uint256"
            }
        ],
        "stateMutability": "view",
        "type": "function"
    },
    {
        "inputs": [],
        "name": "owner",
        "outputs": [
            {
                "internalType": "address",
                "name": "",
                "type": "address"
            }
        ],
        "stateMutability": "view",
        "type": "function"
    },
    {
        "inputs": [],
        "name": "paused",
        "outputs": [
            {
                "internalType": "bool",
                "name": "",
                "type": "bool"
            }
        ],
        "stateMutability": "view",
        "type": "function"
    },
    {
        "inputs": [],
        "name": "signer",
        "outputs": [
            {
                "internalType": "address",
                "name": "",
                "type": "address"
            }
        ],
        "stateMutability": "view",
        "type": "function"
    },
    {
        "inputs": [],
        "name": "sttToken",
        "outputs": [
            {
                "internalType": "contract IERC20",
                "name": "",
                "type": "address"
            }
        ],
        "stateMutability": "view",
        "type": "function"
    },
    {
        "inputs": [
            {
                "internalType": "uint256",
                "name": "",
                "type": "uint256"
            }
        ],
        "name": "usedNonces",
        "outputs": [
            {
                "internalType": "bool",
                "name": "",
                "type": "bool"
            }
        ],
        "stateMutability": "view",
        "type": "function"
    },
    {
        "inputs": [],
        "name": "validDuration",
        "outputs": [
            {
                "internalType": "uint256",
                "name": "",
                "type": "uint256"
            }
        ],
        "stateMutability": "view",
        "type": "function"
    }
]