{
  "manageEntity": {
    "action": "Update",
    "entityId": "199852104",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieracxfaq6x5nwrazdvn5vwbef2ao56vqfbhgtiwa2gydhig7i62rxpq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":2048432819}]}}}",
    "nonce": "0x63d7b622a7856d61199e33113f113d42523ba83077c73630f8e0425aec793eed",
    "signature": "0x58b1697992caeccac787657d9c5cd2d9b1afad3daf0a31d6f575a6e111335565431600ac68887a6355c87b8b22caf79ed01ae96c79469c0c6e8c655c0f63b1ca1b",
    "signer": "0x5bC527d9d9ce97c15d405201d6bB9757f3250Ea6",
    "userId": "199852104"
  }
}