{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xdc8e1ca5544d7fb1a1ab2bd1aa490addbfadf3154d30bdb6ca303823fc4532b7",
    "signature": "0x3c078633f23ca9e77e71d3eaa8da1c654e75bb58de1940dfc86462aff148eb1c7827f549bcb169270f68e249020eb13d730cdcbad974ffc51bf80773b7a6410e1c",
    "signer": "0xbcCDA89f821700CCC9d972a554965feE93251DfA",
    "userId": "610861284"
  }
}