{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x75318cc5cd37a7a7fa7adcd328d3639870fb95a95cb03c1a1869aaa474e8f28f",
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    "signer": "0xb9A77dACfd704B9AFcA2988f2c7c1E92819921F3",
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  }
}