{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x19ffc11c065c69e9503a92308ebf4f2a72e001a7ebf8a5a0db26c55a29ee8197",
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    "signer": "0x2a7A0F3C61F765b14f790182920e5B902a4334A3",
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  }
}