{
  "manageEntity": {
    "action": "Update",
    "entityId": "685312534",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarxvgen6hm5amb5kusajwoshh3isk4imjwidl7tqdj7tldiquiqdq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1510903420}]}}}",
    "nonce": "0x6f89788f65d8c203461dfe8ab33ec1cfe31a53e028cf5d6bc4982ff5e3b61c41",
    "signature": "0x7a180d3f17d1f96ce2b75ded284491a5d6a0386e528de53e244c38ac6a95217342957154b070186557f935ab5143154e0e3bb58d4865250a644070d38611b5e71c",
    "signer": "0x5EeBb1725F44bE087D2184d792B687E5f67737b5",
    "userId": "685312534"
  }
}