{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x423dd5164ab94738594f49405f2147e31604524e6fd08d4d386a00d6ee530379",
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    "signer": "0x668f0622d58FB2F52262C63A1870145bE0aF8761",
    "userId": "808689761"
  }
}