{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3cdccb4af4d28983c2e1c604d03da1429dcceedd083f6fb87c167317824fdbea",
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    "signer": "0xb077b8D44B18982927EA77e71A59EF1317726d61",
    "userId": "796506769"
  }
}