{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9d2a374a10d3ca0c9f5ecf1b2ce568d80bdf42a25baca2548b4e713d886f9331",
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    "signer": "0x0bc835aE7F414747b88bf305cCa10da8f1ABC947",
    "userId": "585052124"
  }
}