How to route messages between a Meteor dapp and a Fedora hosted API built on Laravel

I'm trying to set up an API that will take Ethereum tx/message objects to authenticate. I've managed to build a provider for the dapp that can interact with web3 and the deployed blockchain. However, I'm unsure how to set up a Laravel API to route the data through there. It must get sent out to the API through the dapp, where the user would be authenticated to then sign the message.

Route::middleware('api')->get('/api/users', function (Request $request) {
    return \App\Users::all();
});

This is set up to return the list of users, presumably by their wallets. I don't know how to make post or get requests through Meteor, all I have is:

    $.ajax({
      type: "POST",
      url: '/session/storeValue',
      data: data,
      success: function() {
        console.log("Valueadded");
      }
    })

What I hope to achieve:

  //When the accounts function is called by the dapp
  getAccounts: function(callback){
    //Do something to get the user request
      callback(null, accounts) //Callback the accounts array
  },
  //When a message is to be signed
  signPersonalMessage: function (message, callback) {
    //Somehow send message data to API
    //Get the response back
      callback(null,signedData.toString('hex')) //Callback the response
  },