{
  "manageEntity": {
    "action": "Update",
    "entityId": "854828390",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera2n3mfmltezraqtguhzemebpypgyjodjo2twki4jumz3gormdieea\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1833489616},{\"type\":\"playlist\",\"playlist_id\":276942565},{\"type\":\"playlist\",\"playlist_id\":412766138},{\"type\":\"playlist\",\"playlist_id\":1489270712},{\"type\":\"playlist\",\"playlist_id\":1419938958}]}}}",
    "nonce": "0xc7e9c4661e38588d89e5b4da048af2dd65f0b2010751765048199668a1db35d0",
    "signature": "0x885354475ba64aaf25f36cc8dbf9d2a91048f07e4171acf5d537426a468fc760468ad9b53d1506880672aba3d0cabac4aac5cc5a5e8fd108ec2467339bbcf87a1c",
    "signer": "0xa8BEF74bDb7cdBA1D7E949228F5112f6af3276b9",
    "userId": "854828390"
  }
}