{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x594b6f88e22f18403d988df7d81d1bda2558109bc802924d2d71726fc359c480",
    "signature": "0x0fc62354289a812c2318db7085f99380b730e80c673ccc7d9708fc4522bef78a3dbb26521b6b1dbd69f3716aeda93c3b2405324d5546fdbe2adc4478903032b91b",
    "signer": "0x6c01Ea714fCff16c0871EbDa00Be92bF3d28c47a",
    "userId": "790166395"
  }
}