func (_MinterRole *MinterRoleFilterer) WatchMinterRemoved(opts *bind.WatchOpts, sink chan<- *MinterRoleMinterRemoved, account []common.Address) (event.Subscription, error) {
	var accountRule []interface{}
	for _, accountItem := range account {
		accountRule = append(accountRule, accountItem)
	}
	logs, sub, err := _MinterRole.contract.WatchLogs(opts, "MinterRemoved", accountRule)
	if err != nil {
		return nil, err
	}
	return event.NewSubscription(func(quit <-chan struct{}) error {
		defer sub.Unsubscribe()
		for {
			select {
			case log := <-logs:
				event := new(MinterRoleMinterRemoved)
				if err := _MinterRole.contract.UnpackLog(event, "MinterRemoved", log); err != nil {
					return err
				}
				event.Raw = log
				select {
				case sink <- event:
				case err := <-sub.Err():
					return err
				case <-quit:
					return nil
				}
			case err := <-sub.Err():
				return err
			case <-quit:
				return nil
			}
		}
	}), nil
}
WatchMinterRemoved is a free log subscription operation binding the contract event 0xe94479a9f7e1952cc78f2d6baab678adc1b772d936c6583def489e524cb66692.

Solidity: e MinterRemoved(account indexed address)
package api
import (
	"math/big"
	"strings"
	ethereum "github.com/ethereum/go-ethereum"
	"github.com/ethereum/go-ethereum/accounts/abi"
	"github.com/ethereum/go-ethereum/accounts/abi/bind"
	"github.com/ethereum/go-ethereum/common"
	"github.com/ethereum/go-ethereum/core/types"
	"github.com/ethereum/go-ethereum/event"
)
var (
	_ = big.NewInt
	_ = strings.NewReader
	_ = ethereum.NotFound
	_ = abi.U256
	_ = bind.Bind
	_ = common.Big1
	_ = types.BloomLookup
	_ = event.NewSubscription
)
const MinterRoleABI = "[{\"inputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"account\",\"type\":\"address\"}],\"name\":\"MinterAdded\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"account\",\"type\":\"address\"}],\"name\":\"MinterRemoved\",\"type\":\"event\"},{\"constant\":true,\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"name\":\"isMinter\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"name\":\"addMinter\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[],\"name\":\"renounceMinter\",\"outputs\":[],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"}]"
const MinterRoleBin = `0x`
func DeployMinterRole(auth *bind.TransactOpts, backend bind.ContractBackend) (common.Address, *types.Transaction, *MinterRole, error) {
	parsed, err := abi.JSON(strings.NewReader(MinterRoleABI))
	if err != nil {
		return common.Address{}, nil, nil, err
	}
	address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(MinterRoleBin), backend)
	if err != nil {
		return common.Address{}, nil, nil, err
	}
	return address, tx, &MinterRole{MinterRoleCaller: MinterRoleCaller{contract: contract}, MinterRoleTransactor: MinterRoleTransactor{contract: contract}, MinterRoleFilterer: MinterRoleFilterer{contract: contract}}, nil
}
type MinterRole struct {
	MinterRoleCaller      
	MinterRoleTransactor  
	MinterRoleFilterer    
}
type MinterRoleCaller struct {
	contract *bind.BoundContract  
}
type MinterRoleTransactor struct {
	contract *bind.BoundContract  
}
type MinterRoleFilterer struct {
	contract *bind.BoundContract  
}
type MinterRoleSession struct {
	Contract     *MinterRole        
	CallOpts     bind.CallOpts      
	TransactOpts bind.TransactOpts  
}
type MinterRoleCallerSession struct {
	Contract *MinterRoleCaller  
	CallOpts bind.CallOpts      
}
type MinterRoleTransactorSession struct {
	Contract     *MinterRoleTransactor  
	TransactOpts bind.TransactOpts      
}
type MinterRoleRaw struct {
	Contract *MinterRole  
}
type MinterRoleCallerRaw struct {
	Contract *MinterRoleCaller  
}
type MinterRoleTransactorRaw struct {
	Contract *MinterRoleTransactor  
}
func NewMinterRole(address common.Address, backend bind.ContractBackend) (*MinterRole, error) {
	contract, err := bindMinterRole(address, backend, backend, backend)
	if err != nil {
		return nil, err
	}
	return &MinterRole{MinterRoleCaller: MinterRoleCaller{contract: contract}, MinterRoleTransactor: MinterRoleTransactor{contract: contract}, MinterRoleFilterer: MinterRoleFilterer{contract: contract}}, nil
}
func NewMinterRoleCaller(address common.Address, caller bind.ContractCaller) (*MinterRoleCaller, error) {
	contract, err := bindMinterRole(address, caller, nil, nil)
	if err != nil {
		return nil, err
	}
	return &MinterRoleCaller{contract: contract}, nil
}
func NewMinterRoleTransactor(address common.Address, transactor bind.ContractTransactor) (*MinterRoleTransactor, error) {
	contract, err := bindMinterRole(address, nil, transactor, nil)
	if err != nil {
		return nil, err
	}
	return &MinterRoleTransactor{contract: contract}, nil
}
func NewMinterRoleFilterer(address common.Address, filterer bind.ContractFilterer) (*MinterRoleFilterer, error) {
	contract, err := bindMinterRole(address, nil, nil, filterer)
	if err != nil {
		return nil, err
	}
	return &MinterRoleFilterer{contract: contract}, nil
}
func bindMinterRole(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
	parsed, err := abi.JSON(strings.NewReader(MinterRoleABI))
	if err != nil {
		return nil, err
	}
	return bind.NewBoundContract(address, parsed, caller, transactor, filterer), nil
}
func (_MinterRole *MinterRoleRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
	return _MinterRole.Contract.MinterRoleCaller.contract.Call(opts, result, method, params...)
}
func (_MinterRole *MinterRoleRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
	return _MinterRole.Contract.MinterRoleTransactor.contract.Transfer(opts)
}
func (_MinterRole *MinterRoleRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
	return _MinterRole.Contract.MinterRoleTransactor.contract.Transact(opts, method, params...)
}
func (_MinterRole *MinterRoleCallerRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
	return _MinterRole.Contract.contract.Call(opts, result, method, params...)
}
func (_MinterRole *MinterRoleTransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
	return _MinterRole.Contract.contract.Transfer(opts)
}
func (_MinterRole *MinterRoleTransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
	return _MinterRole.Contract.contract.Transact(opts, method, params...)
}
func (_MinterRole *MinterRoleCaller) IsMinter(opts *bind.CallOpts, account common.Address) (bool, error) {
	var (
		ret0 = new(bool)
	)
	out := ret0
	err := _MinterRole.contract.Call(opts, out, "isMinter", account)
	return *ret0, err
}
func (_MinterRole *MinterRoleSession) IsMinter(account common.Address) (bool, error) {
	return _MinterRole.Contract.IsMinter(&_MinterRole.CallOpts, account)
}
func (_MinterRole *MinterRoleCallerSession) IsMinter(account common.Address) (bool, error) {
	return _MinterRole.Contract.IsMinter(&_MinterRole.CallOpts, account)
}
func (_MinterRole *MinterRoleTransactor) AddMinter(opts *bind.TransactOpts, account common.Address) (*types.Transaction, error) {
	return _MinterRole.contract.Transact(opts, "addMinter", account)
}
func (_MinterRole *MinterRoleSession) AddMinter(account common.Address) (*types.Transaction, error) {
	return _MinterRole.Contract.AddMinter(&_MinterRole.TransactOpts, account)
}
func (_MinterRole *MinterRoleTransactorSession) AddMinter(account common.Address) (*types.Transaction, error) {
	return _MinterRole.Contract.AddMinter(&_MinterRole.TransactOpts, account)
}
func (_MinterRole *MinterRoleTransactor) RenounceMinter(opts *bind.TransactOpts) (*types.Transaction, error) {
	return _MinterRole.contract.Transact(opts, "renounceMinter")
}
func (_MinterRole *MinterRoleSession) RenounceMinter() (*types.Transaction, error) {
	return _MinterRole.Contract.RenounceMinter(&_MinterRole.TransactOpts)
}
func (_MinterRole *MinterRoleTransactorSession) RenounceMinter() (*types.Transaction, error) {
	return _MinterRole.Contract.RenounceMinter(&_MinterRole.TransactOpts)
}
type MinterRoleMinterAddedIterator struct {
	Event *MinterRoleMinterAdded  
	contract *bind.BoundContract  
	event    string               
	logs chan types.Log         
	sub  ethereum.Subscription  
	done bool                   
	fail error                  
}
func (it *MinterRoleMinterAddedIterator) Next() bool {
	if it.fail != nil {
		return false
	}
	if it.done {
		select {
		case log := <-it.logs:
			it.Event = new(MinterRoleMinterAdded)
			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
				it.fail = err
				return false
			}
			it.Event.Raw = log
			return true
		default:
			return false
		}
	}
	select {
	case log := <-it.logs:
		it.Event = new(MinterRoleMinterAdded)
		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
			it.fail = err
			return false
		}
		it.Event.Raw = log
		return true
	case err := <-it.sub.Err():
		it.done = true
		it.fail = err
		return it.Next()
	}
}
func (it *MinterRoleMinterAddedIterator) Error() error {
	return it.fail
}
func (it *MinterRoleMinterAddedIterator) Close() error {
	it.sub.Unsubscribe()
	return nil
}
type MinterRoleMinterAdded struct {
	Account common.Address
	Raw     types.Log  
}
func (_MinterRole *MinterRoleFilterer) FilterMinterAdded(opts *bind.FilterOpts, account []common.Address) (*MinterRoleMinterAddedIterator, error) {
	var accountRule []interface{}
	for _, accountItem := range account {
		accountRule = append(accountRule, accountItem)
	}
	logs, sub, err := _MinterRole.contract.FilterLogs(opts, "MinterAdded", accountRule)
	if err != nil {
		return nil, err
	}
	return &MinterRoleMinterAddedIterator{contract: _MinterRole.contract, event: "MinterAdded", logs: logs, sub: sub}, nil
}
func (_MinterRole *MinterRoleFilterer) WatchMinterAdded(opts *bind.WatchOpts, sink chan<- *MinterRoleMinterAdded, account []common.Address) (event.Subscription, error) {
	var accountRule []interface{}
	for _, accountItem := range account {
		accountRule = append(accountRule, accountItem)
	}
	logs, sub, err := _MinterRole.contract.WatchLogs(opts, "MinterAdded", accountRule)
	if err != nil {
		return nil, err
	}
	return event.NewSubscription(func(quit <-chan struct{}) error {
		defer sub.Unsubscribe()
		for {
			select {
			case log := <-logs:
				event := new(MinterRoleMinterAdded)
				if err := _MinterRole.contract.UnpackLog(event, "MinterAdded", log); err != nil {
					return err
				}
				event.Raw = log
				select {
				case sink <- event:
				case err := <-sub.Err():
					return err
				case <-quit:
					return nil
				}
			case err := <-sub.Err():
				return err
			case <-quit:
				return nil
			}
		}
	}), nil
}
type MinterRoleMinterRemovedIterator struct {
	Event *MinterRoleMinterRemoved  
	contract *bind.BoundContract  
	event    string               
	logs chan types.Log         
	sub  ethereum.Subscription  
	done bool                   
	fail error                  
}
func (it *MinterRoleMinterRemovedIterator) Next() bool {
	if it.fail != nil {
		return false
	}
	if it.done {
		select {
		case log := <-it.logs:
			it.Event = new(MinterRoleMinterRemoved)
			if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
				it.fail = err
				return false
			}
			it.Event.Raw = log
			return true
		default:
			return false
		}
	}
	select {
	case log := <-it.logs:
		it.Event = new(MinterRoleMinterRemoved)
		if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
			it.fail = err
			return false
		}
		it.Event.Raw = log
		return true
	case err := <-it.sub.Err():
		it.done = true
		it.fail = err
		return it.Next()
	}
}
func (it *MinterRoleMinterRemovedIterator) Error() error {
	return it.fail
}
func (it *MinterRoleMinterRemovedIterator) Close() error {
	it.sub.Unsubscribe()
	return nil
}
type MinterRoleMinterRemoved struct {
	Account common.Address
	Raw     types.Log  
}
func (_MinterRole *MinterRoleFilterer) FilterMinterRemoved(opts *bind.FilterOpts, account []common.Address) (*MinterRoleMinterRemovedIterator, error) {
	var accountRule []interface{}
	for _, accountItem := range account {
		accountRule = append(accountRule, accountItem)
	}
	logs, sub, err := _MinterRole.contract.FilterLogs(opts, "MinterRemoved", accountRule)
	if err != nil {
		return nil, err
	}
	return &MinterRoleMinterRemovedIterator{contract: _MinterRole.contract, event: "MinterRemoved", logs: logs, sub: sub}, nil
}