{
  "manageEntity": {
    "action": "Save",
    "entityId": "59549283",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x344231c0209db1322499dcc53876b55f70ad99c6c8440407b6ff14e7ac09f53d",
    "signature": "0xa4a98ae5e984446aa7ab6f0251226ef040fe9209c52df8cedb5f585bab2f060a3a3e25160e73c98be743111fb87a5ba9e69a14e728d7f1526e371c97d2031b351c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}