{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xe5be1f21b684159a0c988d95f4b00648308c8b38749d6cb4fe6c069a11db56ff",
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    "signer": "0x35067Af427B9937774caa50b7161C41233caF249",
    "userId": "429063330"
  }
}