i am not able to import json file with following structure:

"MENU": {
    "PERSON": "Persons"
},
"PERSON": {
    "LIST": {
        "LOAD_MORE": "Load more persons",
        "NO_PERSONS_FOUND": "There are no persons matching the search criteria"
    },
    "VIEW": {
        "NO_PERSON_SELECTED": "There is no person selected",
        "EDIT": "Edit",
        "DELETE": "Delete",
        "DELETE_ACTION" : {
            "CONFIRM":"Are you sure you want to delete this person?",
            "YES":"Yes",
            "CANCEL":"Cancel"
        }
    },
    "SEARCH": "Search",
    "MENU": {
        "ADD": "Add person"
    },
    "MESSAGES": {
        "DELETED_SUCCESFULLY": "Person deleted succesfully",
        "ERROR": "An error occured. Please try again."
    },
    "DELETE_INFORMATION":
            {
                "TITLE": "Information",
                "CONTENT": "It's not possible to delete this person because of a linked user account",
                "OK": "Ok"
            },
    "DELETE_CONFIRMATION":
            {
                "TITLE": "Confirmation",
                "CONTENT": "Are you sure you want to delete this person?"
            },
    "WIZARD": {
        "TITLE": "Create contact",
        "TAB": {
            "CONTACT": "Contact",
            "ADDRESS": "Address",
            "TRAVEL": "Travel",
            "ORGANISATION": "Organisation",
            "EXPERT":"Expert"
        },
        "ACTION": {
            "CANCEL": "The creation of the person was canceled",
            "CLOSE": "Close",
            "DELETE": "Delete",
            "SAVE": "The contact was saved"
        },
        "NAVIGATION": {
            "FINALIZE": "Finalize",
            "UPDATE":"Update",
            "CANCEL": "Cancel",
            "NEXT": "Next",
            "PREV": "Previous",
            "DELETE": "Delete"
        },
        "VALIDATION": {
            "DATE": "Enter a date in the following format DD-MM-YYYY",
            "EMAIL": {
                "INVALID": "Please enter a valid email",
                "EMAIL_USED": "This email is currently in use"
            },
            "PHONE": {
                "PATTERN": "The phone number must contain numbers, brackets, dashes or points.",
                "TOOSHORT": "The phone must have at least {{max}} characters",
                "TOOLONG": "The phone number must have maximum {{max}} characters"
            },
            "INITIALS": {
                "PATTERN": "The initials must contain only capital letters or dots."
            },
            "REQUIRED": "Required",
            "MAX_LENGTH": "The data is too long",
            "MIN_LENGTH": "The data is too short",
            "MAX_LENGTH_VALUE": "The fields must have maximum {{max}} characters",
            "MIN_LENGTH_VALUE": "The fields must have at least {{max}} characters",
            "NOT_VALID": "Please enter valid data"
        },
        "INFO":{
            "REMOVE_TABS": {
                "TRAVEL":"Previously entered travel data will be deleted when finalizing this wizard.",
                "EXPERT":"Previously entered expert data will be deleted when finalizing this wizard."
            }
        }
    }
}

}