{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x049acde1344667c8b926296894150bb600a581ca728e4bb16a031ab1e6b53c4a",
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    "signer": "0x4BbBDc4BC62218882F8f12d09E5F4C84300962bC",
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}