{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xedacbf343169e6cc448f53dd1afc7da4bf4df10d4b3bde4b386a42a785bf1aac",
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    "signer": "0x103EFd86556c1E09c310A448F94b66B52Beaf6fe",
    "userId": "654287712"
  }
}