{
  "manageEntity": {
    "action": "Save",
    "entityId": "80005",
    "entityType": "Track",
    "nonce": "0x9e1ca47915185c6be66231cb836319e2a2a6702f14556ec73a3c561ebbdbfb02",
    "signature": "0x2079143f81fc87e664d7c207952d127b7a82dd6f80012a4a23c2b40a6d7b239708eb81e90bc277316ed6cf42f3239a267c123f0a79d5a8cd23443975769b982e1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}