{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb2e39e968ebd48a34786f7cec0c440d0e1e7d7bfba61d305bb2ff480f600715b",
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    "signer": "0x9F7519969A71D30Ed24Bea026b7BeC67b08bF305",
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}