{
  "manageEntity": {
    "action": "Update",
    "entityId": "199516921",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierai4kwgaoeiq4cehci6qexmrfk6wknhgchwzn6jufmllzxq3zc5e2a\",\"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},{\"type\":\"playlist\",\"playlist_id\":762030733}]}}}",
    "nonce": "0x232fcdf06891a12240cb256293f530cfcf5a01b27bb4701b231862324ecda876",
    "signature": "0xf624e0e7032185e2bf4b4cd0557e8b0c74acdddf768035deeef55da23fa3618c28363b099270a4824c1b850690abfc082a1913479ce385716744d7c47a6fe55c1c",
    "signer": "0x49A438454131D4e8F2A2547287Fc46167b168F47",
    "userId": "199516921"
  }
}