{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x11dea2eaa8f2917c234fb15235a814f3a0f6317bf3751c74177706d6eaccb7a5",
    "signature": "0xba641bb151f44e33b1a988f0e3edf1fc9277131b9ad24b2de37d238d3d8084c83bec505f6bcf3c4f6b7619e01a201bd9bd7c044b0e6a134aa24bff53ba497c9e1c",
    "signer": "0x809Db232a6131f46553BA571FB17bFA2cc58aeE9",
    "userId": "351386054"
  }
}