{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb5bf58a0d9a8f14082a3ce74a10c71d2f83ee539d22bd9f9a4555b6211ba5b3e",
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    "signer": "0x9BCEc58987f4D9dA548362DF974dc51F726ea53E",
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}