{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3d2c601ff7e9d4b0ce80837a907e01f0c5c09c1de68d4fa12120b5c90f1d1f13",
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    "signer": "0xe258BF82776213b83616414e939534527f0d9C0e",
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  }
}