Send WhatsApp Message using Lightning Component

WhatsAppSender.cmp

<aura:component controller="WhatsAppMessageService" implements="force:appHostable,flexipage:availableForAllPageTypes,flexipage:availableForRecordHome,force:hasRecordId,forceCommunity:availableForAllPageTypes" access="global" >
<lightning:notificationsLibrary aura:id="notifLib"/>

    <div class="row">
        <lightning:input aura:id="mobileNumber" name="mobileNumber" label="Mobile Number" />
        <lightning:input aura:id="message" name="message" label="Message" />
    </div>
    <div class="row">
        <lightning:button variant="brand" label="Send Message" title="Send Message" onclick="{! c.handleClick }" />
    </div>
</aura:component>

WhatsAppSenderController.js

({
	handleClick : function(component, event, helper) {
		helper.sendMessage(component, event);
	}
})

WhatsAppSenderHelper.js

({
    sendMessage : function(component, event) {
        var isSigned = false;
        var action = component.get("c.sendMessage");
        action.setParams({
            mobileno: component.find("mobileNumber").get("v.value"),
            message: component.find("message").get("v.value")
        });
        action.setCallback(this, function(response) {
            var state = response.getState();
            if (state === "SUCCESS") {
                component.find('notifLib').showNotice({
                    "variant": "info",
                    "header": "Success!",
                    "message": "WhatsApp Message Sent"
                });
                
            } else {
                component.find('notifLib').showNotice({
                    "variant": "error",
                    "header": "Something has gone wrong!",
                    "message": "Unfortunately, there was a problem while sending WhatsApp Message"
                });
            }
        });
        $A.enqueueAction(action);
    }
})