{
  "manageEntity": {
    "action": "Update",
    "entityId": "469167571",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieramzwircw3dnstn5mn3bhycwligmkg7jgzn24xj6selvmd6jbenyia\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1332585669},{\"type\":\"playlist\",\"playlist_id\":2084958373},{\"type\":\"playlist\",\"playlist_id\":881678761}]}}}",
    "nonce": "0xfc9d7d98e41793b5be986c23cfa50dae7c0c14d24542236bc45e047ec50cc76c",
    "signature": "0x5fc5840c0b2db6695b496dfe158fbb08c7cc1b4b6baf39a1a9047da7130fb06373073fe62a367d097a4d4abb3479865e4475bba5f5288edc49af20e2fadd01a01c",
    "signer": "0xD8a51B5826a7BF17e04f70223177e89259D8ab3b",
    "userId": "469167571"
  }
}