{
  "manageEntity": {
    "action": "Save",
    "entityId": "59549283",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8c518c5f24552200db35e9ceb8aa2acea23b0e90960d0fc840633108be0292d0",
    "signature": "0x37b0a43ae4668233f507c808b017510e13dd84c1227125d4b21098a491b587273cf4369cfa259340617f4ffd6190d804f45d8009f44af0fb8efe199b4e4188761c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}