{
  "manageEntity": {
    "action": "Update",
    "entityId": "4747843",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieratz74r224uu3yot63xlbduev52enhrpxw6ucfv5rd72f5ol3bswza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1375072795},{\"type\":\"playlist\",\"playlist_id\":969667055}]}}}",
    "nonce": "0x6e523d51ab4e2b27a771059c91507c4e2605a6999c8c8761f08c726638f899a5",
    "signature": "0x5427182edad244a7d1bde30f3a16b8b2d4bed6dd70aeca9961f0f78f8985fb9e77bd41d73c5dc4df4ed69ea9e2f082349c84329c41af0bc35ccb203065542ce91b",
    "signer": "0xaDEf4367343c22a59e6eE33b810cE184d737a5ff",
    "userId": "4747843"
  }
}