{
  "manageEntity": {
    "action": "Update",
    "entityId": "799571887",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierarl4vqlh2teh2xef3g4e3yak7za7tpnu5l2qy56jlbls74tzgnovq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":442302854}]}}}",
    "nonce": "0x89158068633393da68be928c766e53c777f26fd80b7990d5c1da2b866123fc25",
    "signature": "0x37c01d60f8d587cbb0e6d8929b46b6022e1562da17183dcf2c12030a340088467824f458392c4aaacd96e7d84918d6f846b70ad8c7491e21e5457a7c3709a6871c",
    "signer": "0x75ACCD4160aaada206b4dCfA68E88187C9ba9A0b",
    "userId": "799571887"
  }
}