{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x857800f8fa8525667ded18b9329c383e2f2a707a69235edfe715381cecaaa436",
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    "signer": "0xfBe6C68905E1f4002b74750003Abb1000eB9eB3F",
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  }
}