{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x12a2dfdd44a599f0da67a403b263657313fbe9d08878f8241b6426ed0704f2a4",
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    "signer": "0x15d26005E9e18Ac96a165a2c593B5403fF71BF77",
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}