{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xefb432ec6836501ab5c6154c362abe79ab27cc4e3ec6bc630f1ed2bb58341f7a",
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    "signer": "0x8B4F32F4508cef97a10477e8CFC5560f961048FF",
    "userId": "232851639"
  }
}