{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd7a7010b56579103ac25e9ab5335cef25a4d383c29bc10ff367a73b6e54440e1",
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    "signer": "0xA97F305bF7cc0c77ec72417Ec298aD05f2d6E750",
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}