{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x700b357dc748e431d70cefc39f6f5929467752a367f00c89b5b120f58627cc62",
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    "signer": "0xf079dD72A5e7aDa068Bd5C490ea8c018901AB037",
    "userId": "863508406"
  }
}