{
  "manageEntity": {
    "action": "Save",
    "entityId": "41949565",
    "entityType": "Track",
    "nonce": "0xa72916e5281154e72886474ecf98bf73eb2a113e9784ee7a31c2412e35951514",
    "signature": "0xf278d3fd0fc95be59fbd8eb12553bb6cf951b96e9e4c8657b9ed5bf887dea6781cf40cf09f7260afeb8cfc87a884dfe959a75d38e10feaddb02e97480c8cce901c",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}