{
  "manageEntity": {
    "action": "Save",
    "entityId": "1928074664",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbbe17b9331c4243fc218a109afe8e0c98d1e824059d8194791daf0656e70fe01",
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    "signer": "0xE7D37531a757aEaf8B2c8037a79C03819edc20Dc",
    "userId": "870684573"
  }
}