{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xf3b0ac73a17d3c898889321599361aa6d0cf0a3008c55ec1a616841f9163dedf",
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    "signer": "0xF1DB1d78531A8Dda09eCcF66cDDF8494411D3e5e",
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}