{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x60257fdcddff74cda414b4db19a54480e9456ec3530619c06350ccb8ce854147",
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    "signer": "0x8A64785d05192D66C9118D967E19021491A2D5de",
    "userId": "995332578"
  }
}