{
  "manageEntity": {
    "action": "Update",
    "entityId": "999396914",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierahmfkqbrr4l7u3lx7vjeuzahfrcdlu47raytkpwdwhve4sip62eiq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1362308373},{\"type\":\"playlist\",\"playlist_id\":1657380206}]}}}",
    "nonce": "0x1182e08b8dff10a46e6c11b7b60768fceea85bea9b16ecab3995ee7ce75f0047",
    "signature": "0x8b85e9bcb80838c9f3c3d09c45b7964c8fb71a004c12b3ea8bf314ca1b15ff9a0d4e4b081614c0cb41de087e18b7f3bf226d4274b43afff273472dca23957acc1b",
    "signer": "0x447887A35958D25Fb5B659937312606ec7E55dBb",
    "userId": "999396914"
  }
}