{
  "manageEntity": {
    "action": "Update",
    "entityId": "513100334",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraifjc2gpufh3o3u36dl25jdgakaaates2wl4o3qdsynwnp7tbausa\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1155126198},{\"type\":\"playlist\",\"playlist_id\":1745519063},{\"type\":\"playlist\",\"playlist_id\":1828603427},{\"type\":\"playlist\",\"playlist_id\":1210419250}]}}}",
    "nonce": "0xc9cbf5ff4f63a69585301f84ac0bcc381c5a20e633cf5a6456cd7ba8d7a18197",
    "signature": "0x7d621aa9055d13723b53bc18da89331b9755a86a0182ed017916b9943aad6c25211a091675e2bfab3a14d9644816a6a9ebbc0e0a9650c1688d3ff92ae102c9051b",
    "signer": "0xEFec33FF65644dee8EaE96E99C93429330B67c16",
    "userId": "513100334"
  }
}