{
  "manageEntity": {
    "action": "Save",
    "entityId": "1116920035",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x8ce7f0395f5815c428089bb0fd6f00e5f0de9ffe12feed69bc9193138822dd67",
    "signature": "0xd3e47744b400528035a423155ab9052c07eee7fa18b9b6ab159b40622b7e8f4b2236bbb9ead928f3370952473c2fbdff08737d1e77254ad690b60a1bd0c7e25c1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}