{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x32ecccbf6a00d04f8dc01fb771a8e14e49bec6f2ea8a5de939c66f44e985047a",
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    "signer": "0x9222fd469d5905C6e5497fae8D2B3a42036E3b1f",
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  }
}