{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x487a694a9ebf9de4bc9cd2d1e24508cdb3dae3cea837c7e2a6d124a92259add5",
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    "signer": "0x25F540f6f482cC6017beFD91f6A84255ffc502e8",
    "userId": "683423914"
  }
}