{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6910742e441a1c69d2163a3073263bf79196460b919184813a9ee0f87c5efad2",
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    "signer": "0x6078934b3c7b59D7100F87172BA77449635B17F7",
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  }
}