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Push user segment membership updates from Mediarithmics to Lemrock via an Audience Segment Feed.

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Destination URL

POST https://api.lemrock.com/v1/cdp/mediarithmics/segment-updates

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Required Headers

Authorization: Bearer <LEMROCK_API_KEY>
Content-Type: application/json

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Mediarithmics Setup

  1. In Mediarithmics, create an Audience Segment Feed (plugin) to push user membership updates to an external platform.
  2. Configure the destination:
    • URL: https://api.lemrock.com/v1/cdp/mediarithmics/segment-updates
    • Header: Authorization: Bearer <LEMROCK_API_KEY>
    • Method: POST
  3. Choose single-call or batch mode per your volume; Mediarithmics monitors /user_segment_update plugin calls.

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Identity Keys

Use one or both:
  • customer_id (retailer ID)
  • email_sha256 (lowercase hex)

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Payload Example (Batch)

{
  "datamart_id": "dm_12345",
  "segment_id": "seg_high_value_shoppers",
  "op": "upsert",
  "identities": [
    { "customer_id": "C12345" },
    { "email_sha256": "d2c2a1..." }
  ],
  "attributes": {
    "loyalty_tier": "GOLD",
    "lifetime_value_bucket": "HIGH"
  },
  "timestamp": "2025-11-07T16:20:35Z"
}
Operations: "upsert" (add/update) or "remove" (segment exit) Response: 
{ "accepted": true, "processed": 2000, "segment_id": "seg_high_value_shoppers" }

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Identity Rules

FieldTypeNotes
customer_idstringStable retailer customer ID (primary key)
email_sha256stringLowercase email → SHA-256 → hex
segment_ids[]array<string>Segment keys/codes
loyalty_tierstringe.g., SILVER / GOLD
points_balanceintegeroptional
  • email_sha256 = SHA-256 of lowercase trimmed email, hex
  • Use customer_id as primary key when available
  • Send upserts on join/attribute updates; send remove on segment exits
References: Audience Segment Feed | UserPoint/Segments APIs