{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe13f197928e9531a616341fc2ed8ad75300a8cdfd5e81e5d576039308561e359",
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    "signer": "0xe0A0e4008315896ddA67116A8b3aa6A1E1F17CC4",
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}