{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6997afdb2be874fb4ba6fa6f00f4ea5a9bec7c0e7fc1574474f16f64f4679408",
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    "signer": "0xAD005e09EaeDc1f5cc68D2FD06385CC236635D03",
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}