{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xb6d3519b18dc044a0d655d3d063494b0bf8128b91578edfbbbcd21c886fda36d",
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    "signer": "0x567AE8cA65dCCce4A528007AA2BC8E38cA94ffBa",
    "userId": "707341357"
  }
}