{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x467c8dcf25d66a212da53e8902c519014d347063125b37d8ad9083522698dff8",
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    "signer": "0xEa5259910B59b55889DA5C50e75e6C5b6B79cF5f",
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  }
}