{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2ecd388132a38207ac7975506306cc95ee7b9c7370d3f74b096a73a6c239b84d",
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    "signer": "0x4f86ed9a89B8770232fFc1a8A6510aEf9aBD5dd5",
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  }
}