{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x58506395066ce75f0f5c029ac4d0032969bff5c32b9556ae1c205c6eec6ca351",
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    "signer": "0x343Dd66E948d0E94596Cd0eb47e9be7622F41072",
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  }
}