{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x6cb291f55a679c645ca887d20708a8e797d0da3130a7eb53238c8e276c181dfa",
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    "signer": "0xe0427b2da5a7998032CDfFBf0E481807BFBd4Fb1",
    "userId": "574969152"
  }
}