{
  "manageEntity": {
    "action": "Update",
    "entityId": "999396914",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierazj4dv3t3rjgnyv65ibgikkf3gx3b5ogwzaenhtkdzzlq7fmeevdq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1362308373},{\"type\":\"playlist\",\"playlist_id\":220181064}]}}}",
    "nonce": "0x64e9f6665192b755239797e55676aa8a9a481b3541d47f576eb1afa50373dd92",
    "signature": "0x996043b55a1788b6f6ae3f686c119aff2c027c5774bca6dd7d1bc4d18a9e6f716a9f6e477df5b4c3b32a7453670975fb79f85ffed76bc7d40c9bb4299f15f6391b",
    "signer": "0x447887A35958D25Fb5B659937312606ec7E55dBb",
    "userId": "999396914"
  }
}