{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x1a2e2eb218b9537ad48af16a883f52d69c97be40c31aad6dbc8faa03c61863a3",
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    "signer": "0xA78079C79E7c8e90c6Fab500d2D57937e74dbA09",
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  }
}