how to update custom attributes of user in aws cognito

I'm integrating the stripe into the MERN app. On the stripe webhook call, I need to update the user custom attributes (Cognito). Is there any possible way to find the user using email in the pool and update its custom attributes?

I have tried (function:listUsers) this code to get the user but it doesn't provide the custom variables of the user.

const params = {
  UserPoolId: AWS_POOL_ID,
  AttributesToGet: ["email"],
};
new Promise((resolve, reject) => {
  AWS.config.update({
    region: AWS_REGION,
    accessKeyId: AWS_ACCESS_PUBLIC,
    secretAccessKey: AWS_ACCESS_SECRET,
  });
  const cognitoIdentityServiceProvider =
    new AWS.CognitoIdentityServiceProvider();
  cognitoIdentityServiceProvider.listUsers(params, (err, data) => {
    if (err) {
      console.log("cognito err::", err);
      reject(err);
    } else {
      console.log("cognito data:", data);
      resolve(data);
    }
  });
});

Response:

[
    {
      Username: '15a2-c98c-43a5-63c',
      Attributes: [
  { Name: 'email', Value: 'abc@gmail.com' }
],
      UserCreateDate: 2021-12-02T11:33:37.561Z,
      UserLastModifiedDate: 2021-12-02T11:35:24.956Z,
      Enabled: true,
      UserStatus: 'CONFIRMED'
    },
    {
      Username: '15ff633f-41faa9',
      Attributes: [
  { Name: 'email', Value: 'abc@gmail.com' }
],,
      UserCreateDate: 2021-09-17T14:37:12.943Z,
      UserLastModifiedDate: 2021-09-18T04:08:25.443Z,
      Enabled: true,
      UserStatus: 'CONFIRMED'
    }
]

but I need to get and update the custom variables only email available for finding user