Update lexicon.mdx (#1798)

* Update lexicon.mdx

Add segment, mParticle, Avo import options

* syntax

---------

Co-authored-by: myronkaifung <97630035+myronkaifung@users.noreply.github.com>

Author: julianneb-mixpanel

pages/docs/data-governance/lexicon.mdx

@@ -293,6 +293,36 @@ Once you've made your modifications, you can directly import the CSV file into L
 
 Event and property descriptions and metadata (hidden, dropped, sensitive, etc) that are already in Lexicon will be overwritten by descriptions and metadata for matching event and property names. By default, any event and property descriptions for events that are not imported will remain unchanged unless you check the option to overwrite your entire data dictionary during import.
 
+### Segment Import
+When importing a data dictionary from Segment Protocols using the Segment Config API, you will be asked for your Segment Token and Segment Workspace. You can find your Segment Token by going to your Segment dashboard: Settings > Access Management > Tokens
+
+You can use an existing Token, or create a new token with a Token Role of Workspace Owner.
+
+For the Segment Workplace value, we recommend using the Slug name located in the Segment dashboard: Settings > General Settings.
+
+Once you have your Segment Token & Workspace, head over to Lexicon and Select Import from Segment.
+- Enter your Token & Workspace
+- Select the Plan you want to import from Segment
+- Review the Events and Profile Properties that will be imported
+- Import your Segment Plan into Lexicon
+
+### Avo.app Import
+In order to import your data dictionary from Avo.app, you will need to enable an integration with Mixpanel. The following information would be necessary in order to complete this integration from Avo.app:
+- Mixpanel Project ID (https://mixpanel.com/project/[Mixpanel Project ID]/...)
+- Mixpanel Service Account Username & Secret (Owner or Admin role required)
+To publish your Avo data dictionary to Lexicon, click the "Publish to Lexicon" button in the integration interface.
+
+Click [here](https://www.avo.app/docs/publishing/integrations) for more information on integrating Avo.app with Lexicon.
+
+### mParticle Import
+When importing a data dictionary from mParticle, navigate to your Data Plan and select Download Plan Version from the upper right menu.
+
+- Click Import on the top right hand side of Lexicon
+- Select mParticle
+- Select the downloaded JSON file from mParticle Data Plans
+- Review Events, Event Properties, and User Profile Properties to be imported.
+- Import data into Lexicon
+
 ## Lexicon Schemas API
 
 Mixpanel provides a suite of API endpoints for you to Retrieve, Create, and Delete your data dictionary in Lexicon. To use these APIs, check out our [API reference docs](https://developer.mixpanel.com/reference/lexicon-schemas-api).