permit2

type Domain struct {
	Name              string `json:"name"`
	ChainId           string `json:"chainId"`
	VerifyingContract string `json:"verifyingContract"`
}

type PermitBatchTransferFrom struct {
	Permitted []TokenPermissions `json:"permitted"`
	Spender   string             `json:"spender"`
	Nonce     string             `json:"nonce"`
	Deadline  string             `json:"deadline"`
}

type PermitTransferFrom struct {
	Permitted TokenPermissions `json:"permitted"`
	Spender   string           `json:"spender"`
	Nonce     string           `json:"nonce"`
	Deadline  string           `json:"deadline"`
}

type TokenPermissions struct {
	Token  string `json:"token"`
	Amount string `json:"amount"`
}

type TypedData struct {
	Types       map[string][]TypedField `json:"types"`
	PrimaryType string                  `json:"primaryType"`
	Domain      Domain                  `json:"domain"`
	Message     map[string]interface{}  `json:"message"`
}

type TypedField struct {
	Name string `json:"name"`
	Type string `json:"type"`
}