{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x927a62779c421e4a2c9d2d9e42cdccf089ef907b8be40c32405cb5924362792c",
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    "signer": "0x965e62d05702341Ca060C55e48DA5eA1D211b8c1",
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  }
}