{
  "manageEntity": {
    "action": "Update",
    "entityId": "326767831",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierai3xz4tzxxdmcwrnhmyuts5rzxzdxsazv2mlfiizi3zzekg5z3vwa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1448541809},{\"type\":\"playlist\",\"playlist_id\":231573422},{\"type\":\"playlist\",\"playlist_id\":26091859}]}}}",
    "nonce": "0xb4288332ae0e1e552e1dd55bfca7ed7f0cf33fb6ddbd681513528bcc315dd440",
    "signature": "0x622d505870e09d3a7be2ae4c29f487b8935d782f64a965b17e57b59e4b2dcf950de2baf2e6cbed61665c60191563360650f704d7dd939dac2ebb4bfca237f2a81c",
    "signer": "0xA21b45B80cA89EdC19365C5f9B50d82051294192",
    "userId": "326767831"
  }
}