{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x9ca8eece1f6a0cfc0bd027d03064d11612a8af036418008f41aa932b2f553634",
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    "signer": "0xd5F33C00B7a0774F6A95571166bA160Ff90c4A2A",
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  }
}