{
  "manageEntity": {
    "action": "Update",
    "entityId": "575818847",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierae6hkrempofy5q6lyla2lanafcvkpvb7tqd2yzhu3eo42c5vkzb7q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1644005660}]}}}",
    "nonce": "0x74769aed78a5ba861a6c51102992d563597321d51f0f18abaf3ce9d9bbd7bded",
    "signature": "0x3e6030f0efacd02cb220e21a1a0fb714b5f49c4719480d645117a54ee1739f7967b961e331bff784bcf3c2307e8b01b3f2718313ebba51ff4be84495c44bb8611c",
    "signer": "0x0876D555736F064BA35fa093f0990251Ceb1c468",
    "userId": "575818847"
  }
}