{
  "manageEntity": {
    "action": "Save",
    "entityId": "81348734",
    "entityType": "Track",
    "nonce": "0x287baee6c67a9068f84ec789fde884eaea8e7699fc446e866915f2bde5ab57d3",
    "signature": "0xd854930ab16ebddbaa691f9bc1c83b9180ffe34f93b529b81591dd862cea481f5b6858ac8b9d05249c1e6366dca4c557ea66088de6071f0925314ec5485513791b",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}