This tool creates a retargeting audience by importing an existing audience from a native advertising
            channel (Google Ads, LinkedIn, or Facebook). The audience can be selected from the list of available
            retargeting audiences returned by the get_retargeting_audiences tool.

            **REQUIRED TWO-STEP WORKFLOW:**

            STEP 1: Get available audiences for your channel
            - Call get_retargeting_audiences with your channel (GOOGLE_ADS, LINKEDIN, or FACEBOOK)
            - Review the returned list of available audiences with their details (name, matchCount, etc.)
            - Select the audience you want to import by its ID or by matching its properties

            STEP 2: Create the retargeting audience
            - Use this tool (create_retargeting_audience) with the audience data from Step 1
            - Provide the audience details from the get_retargeting_audiences response
            - The audience will be created and imported into the Metadata platform

            SUPPORTED CHANNELS:
            - GOOGLE_ADS: Google Ads retargeting audiences
            - LINKEDIN: LinkedIn retargeting audiences
            - FACEBOOK: Facebook retargeting audiences

            WHEN TO USE:
            - "Create a retargeting audience from [audience name] in [channel]"
            - "Import [native channel] audience into Metadata"
            - "Add [audience name] from [channel] as a retargeting audience"
            - "Create a new retargeting audience based on [channel] native audience"

            WORKFLOW EXAMPLE:
            User: "Create a retargeting audience from my Google Ads campaign audience"
            1. Call get_retargeting_audiences(channel="GOOGLE_ADS") to list available audiences
            2. Select the desired audience from the results
            3. Call create_retargeting_audience with the audience object from the results

            PARAMETERS:
            - audience_data: Complete audience object from get_retargeting_audiences response (required)
              Should include: id, name, type, subtype, channel, matchCount, externalAccountId
              Note: This is typically the entire audience object returned by get_retargeting_audiences

            AUDIENCE DATA STRUCTURE:
            The audience_data parameter should be a dictionary containing:
            - id: Unique audience ID (required)
            - name: Audience name (required)
            - type: Audience type (e.g., GoogleAdsAudience, LinkedInAudience, FacebookAudience) (required)
            - subtype: Audience subtype (e.g., GOOGLE_ADS_RETARGETING, LINKEDIN_RETARGETING) (required)
            - channel: Channel type identifier (required)
            - matchCount: Number of matches/members in the audience
            - externalAccountId: Associated account ID on the advertising platform (required)
            - mdId: Metadata ID (optional, typically null for new imports)
            - externalName: External name (optional)
            - externalSubType: External subtype (optional)
            - seedSourcePlatform: Source platform for the audience seed (optional)

            RETURNS:
            Success confirmation with details about the created retargeting audience including:
            - Audience ID
            - Audience name
            - Type and subtype
            - Channel
            - Match count
            - Creation status

            COMMON USE CASES:
            - Create retargeting audiences from Google Ads native audiences
            - Import LinkedIn retargeting audiences into Metadata
            - Setup Facebook retargeting audiences for multi-channel campaigns
            - Consolidate native channel audiences into Metadata platform

            IMPORTANT NOTES:
            - Audience must be selected from get_retargeting_audiences results
            - The audience object must contain all required fields
            - Channel must be GOOGLE_ADS, LINKEDIN, or FACEBOOK
            - Audience creation is immediate and the audience becomes available for targeting
            - Once created, the audience can be used in campaigns across channels