{
  "manageEntity": {
    "action": "Update",
    "entityId": "650710289",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierayayjagli53qsu5jcj7i5qb3svkqguiiin3qg3bczyaez6mdgw2aq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1636386538},{\"type\":\"playlist\",\"playlist_id\":1514192617},{\"type\":\"playlist\",\"playlist_id\":1647936231},{\"type\":\"playlist\",\"playlist_id\":1629360112}]}}}",
    "nonce": "0x224122e416d684d297ea35320ce193aca68d35b69746cb8246640177f7e8b874",
    "signature": "0x135bc6bfb0217ef55d1b9668cac182fee1a5b730a8a33b5bafb7fac7960deeb27b6bd6ed6eb7760ed3b338f9fc08fc48d6ec66de750871aed6c07c6c0381565e1b",
    "signer": "0xA76bb874Ea465ed9b8201008c0Dab4F17b244752",
    "userId": "650710289"
  }
}