{
  "manageEntity": {
    "action": "Save",
    "entityId": "53575",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x3290bea587524b7cd670b0a37b5fcc56bc81430f702099fe8034267ba9cfd76b",
    "signature": "0xded43f56d5f3c666bf6dbebc0d6b6f0d475f2fb5ef04d58830e70f9f5646cffc2589a713a34387bdc3b322e59d946ba5b839ea09c31d7bbc966ab7f8e78c06fd1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}