{
  "manageEntity": {
    "action": "Update",
    "entityId": "388569291",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraapfzg5wpdpt7wtrda6i2dnaghvfgod2dixyusd2oono4fqvwycaa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2007605909},{\"type\":\"playlist\",\"playlist_id\":1623693722}]}}}",
    "nonce": "0x541cc6ae9b66e041c6cd700485ad0cce3f670eb8ad046afb372dbfec335a4924",
    "signature": "0x4e072e9d2f55b5fdeaa2dc71496686c496b581e782e2eb44599f579e03f0fc34088a15e7f959a87ae7fb8dc01f0342cbf0de384e231ad00dffd1dafa1fbff6791b",
    "signer": "0xf92f540BbaCd010681Ba15a2bD61973e3BD97b74",
    "userId": "388569291"
  }
}