Media API (clientId)

using atlaskitRenderer from my forge to connect app , to preview images i should use mediaProviders
setting up my mediaProvider , i couldve get the token , and the clientId but its hardcoded , i just want to understand what is the clientId and how to retrive it ? its not the same as the clientKey neither account id or cloud id ..

 viewMediaClientConfig: {

        authProvider: () =>

new Promise((resolveAuth) => {

resolveAuth({
  clientId: ‘d6e9597f-***-****-****-c78ab9810abf’,
  token: tokenF,
  baseUrl: ‘https://api.media.atlassian.com’,

  });
  })
 }