{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x392efb82b78f942d9b5e5b05734bff12de785a4373e02321a74c1899ce2982ee",
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    "signer": "0x34F50BD1d16FaA0390f6037c86b7D52Ff6629a25",
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  }
}