GivethWeirdDonate.sol

 
 contract IGivethBridge { 
  function donateAndCreateGiver(address giver, uint64 receiverId, address token, uint _amount) payable public {
  }
 }

contract Donator { 
    
    IGivethBridge givethBridge = IGivethBridge(0xC59dCE5CCC065A4b51A2321F857466A25ca49B40);
    uint64 public givethReceiverId = 226;    

    function donateWeird() public payable returns (bool success) { 
        address giver = msg.sender;
        bytes memory _data = getBytesData(giver, givethReceiverId); 
        success = givethBridge.call.value(msg.value)(_data);
    }
    
    function getBytesData(address giver, uint receiverId) public view returns (bytes data) { 
        data = abi.encodePacked(
            0x1870c10f,
            bytes32(giver),
            bytes32(receiverId),
            bytes32(0),  
            bytes32(0)
        );
        return data;
    }

    function donate() public payable returns (bool success) { 
        address giver = msg.sender;
        givethBridge.donateAndCreateGiver.value(msg.value)(giver, givethReceiverId, 0, 0);
        return true;
    }
}