{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb68730557087e1424ac7669ad48613effccf155ad5435f0cfc4c0b1714cec013",
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    "signer": "0x51da829dBF72c8f3D38ed4Efe9E50ECEEA666C62",
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}