{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x143dce9237bb2ea0585ac2ae33a954a191aae2f1c8563e788575b339d03622b5",
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    "signer": "0x8299Bf72dBe9fB3Fb53d425F20Df8371fEa617E6",
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}