{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x784e22dc02d7171e82d15e1d656558f4885873c1851762dae588cf68ed1d012f",
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    "signer": "0x46231C1424e04f00DEd026172b25d3d8915Eab70",
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  }
}