{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xc29d9b03eb9a56006a704d5caace160a3ef8cfbe949db586fc0fc13676b00a04",
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    "signer": "0x484BFEd124Fe5FE825A8837d1Fa28Cd1a4f57F9b",
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}