{
  "manageEntity": {
    "action": "Update",
    "entityId": "87961106",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieragrghdlvph45xkpc2ryi6uicgshwquogyxqmfommhawsdatoa23nq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2118320187},{\"type\":\"playlist\",\"playlist_id\":334680225},{\"type\":\"playlist\",\"playlist_id\":455407784}]}}}",
    "nonce": "0xf9f3494829d446b2de26075196c4fa211359e3493c2689c8584876b9f6659a83",
    "signature": "0x4ec78faf3f0fb09200ead5536953e0b8f915ad0dea71f8867422365e575357ac35a88245799492925ab5a6e21d8e9e234f5dacca14a16227138566db07c4d0a21b",
    "signer": "0x46e7101c875D60D850099f5251d848716a5CfB80",
    "userId": "87961106"
  }
}