{
  "manageEntity": {
    "action": "Update",
    "entityId": "199516921",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierajhjxflil53bz2n6srjuy7y46purdjqqrofa5idzhrpxjpkrt4ljq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":631542371},{\"type\":\"playlist\",\"playlist_id\":1638193401},{\"type\":\"playlist\",\"playlist_id\":366181211},{\"type\":\"playlist\",\"playlist_id\":1291205104},{\"type\":\"playlist\",\"playlist_id\":315867420},{\"type\":\"playlist\",\"playlist_id\":722223215},{\"type\":\"playlist\",\"playlist_id\":1495565835}]}}}",
    "nonce": "0x741302b8c830136ac1879f0b1cfee342cdeabe77a3a58eacf02620a953dc488e",
    "signature": "0x8849cf1c80f95da3740766f46bd2f8f9b6cdb8946037bd2f6e025617ca562b250614f985de22fd4d1e0a9542f23a864db5af05abaee68b7e97d79ff3f3cde2a51c",
    "signer": "0x49A438454131D4e8F2A2547287Fc46167b168F47",
    "userId": "199516921"
  }
}