{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x7e71a230d3520a251b0fb3f3eb0328e4e51bcacc7838b39e124c261e1587384c",
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    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
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}