{
  "manageEntity": {
    "action": "Save",
    "entityId": "316232673",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x2447ffe0dffe41d9eda2dbc5024a500986360df0d08cb28e7ba7e839c6175493",
    "signature": "0x28ba5b54ac73cb983410346846c5fcc67d8cfa31183eb2bffc0173903801d3ec404ad2ffb480de80bb24002c7b26645598fcb5b247f74c97d8c056899f34d7811b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}