{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x060b79fc18e72478eb35920c0bfa6f4cd1a45934392fe78991b79c2d6bbdd894",
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    "signer": "0xEeeC97Ca106a9FcdBf9c1B313275391bD80c7020",
    "userId": "751297159"
  }
}