{
  "manageEntity": {
    "action": "Update",
    "entityId": "648022498",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawvf5xgjxq6kksg6paapgcplypapkft4o2deyjyuzae7phpwkursa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1783716666},{\"type\":\"playlist\",\"playlist_id\":149966675}]}}}",
    "nonce": "0x106e310856306e68e7d162848a2f9a6256ac25588ed175f5c5c947703daeff21",
    "signature": "0x953c7f9bc93c6952fc48c0c6ce6a8d385fd053827a3c7ccca7499a2cd5cbaf234c1677a5708b42b781c3cacd1d0a9bcd33738655378eb317c3802cf785fa579c1b",
    "signer": "0x685c86760D3c967538c225355603902597f5D411",
    "userId": "648022498"
  }
}