{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0d5d59d37f5c2b306dd66d633cc44c6ae3057e3ada6cbcf496431fed3a815cc0",
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    "signer": "0x3AAA0E08195E7a766d4cA3C4b01C7f8a06255B9B",
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}