{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x4645047d5daf67e764e0b229bd3c149229fd91808a4c18d25afc712445617224",
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    "signer": "0xF4b3744A3acf7b2f977947FC5C559952b7ca4C14",
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  }
}