{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6aab19ae1f814f96d928ad4b3b912aa4655ae1ea051304d4b6ad25d7501e3ec0",
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    "signer": "0x5bB9Cd295E2E2Ec2Da049D53c19449e5BD75e200",
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  }
}