{
  "manageEntity": {
    "action": "Save",
    "entityId": "262805142",
    "entityType": "Track",
    "nonce": "0x8c0bb7e5a7ad86aba45a0c351046b050744f25ef61d316246a81e1a1416552e1",
    "signature": "0xa46e6fd6ac7307af9e94a1b738cba1e91762ebc7380b226276bb3b301ebefb2f12232dbb6f1689235c0bfe827860be2962862b608b3d076ad876457b3652d3e81c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}