{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8c9498ee68a4a0e7f54d0d407e08b1530d4266e60561408989fc0d42073470e1",
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    "signer": "0x97eAfE883FbF33a8b75f6f37440caFE5CC452d3f",
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  }
}