aws_gatewa_lambda_authorizer.js

const valid_tokens_for_applications = [
    "a147549773dfc1830f8568aef1",
    "54977dfc1814755683dfaef773"
]
exports.handler = async (event) => {
    let {headers:{authorization}} = event;
    const response = {
      "isAuthorized": valid_tokens_for_applications.includes(authorization)
    }
    return response;
};