{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6162b383d3d90163b3d0df386b86295aa661a99f044c66980e60a0c7d5b12d05",
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    "signer": "0xfD493cdDfD73c3B2A9a88BfC7bd2177Bf1FEdaB1",
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}