{
  "manageEntity": {
    "action": "Update",
    "entityId": "731504573",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierastpgxmnbjub2bcx57cmflicorm2c5l2uuw7yghuwh5g3byvtbmbq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":294890256},{\"type\":\"playlist\",\"playlist_id\":2072693042},{\"type\":\"playlist\",\"playlist_id\":1600030744},{\"type\":\"playlist\",\"playlist_id\":178311639}]}}}",
    "nonce": "0xe86c39beb3c072ddc0bd08ff2839e44d4fa789d578927f2aa6281edba4634ff7",
    "signature": "0x99f90ca0cd78ed6524b41fa07de517e4b37ec66efea6a08e34aaf8d6597eabda08184a49900612bc61f641b88f1d3735acec2d74b6cdcaacf411584e783c862b1b",
    "signer": "0x1F487439a44B3cba4D327B8d26Db320344dC8360",
    "userId": "731504573"
  }
}