{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x0fd57122085364d45f71851b9115bff28c3bf9d47edfdffbe762ad569a722d59",
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    "signer": "0xCCFCbacB122ad5a813E75b44623a8EF1876D9F1b",
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}