{
  "manageEntity": {
    "action": "Save",
    "entityId": "1498340068",
    "entityType": "Track",
    "nonce": "0xc61f5a59da58df10c6e10efdffeac7dec00d6d49e7083d752381a10407443cac",
    "signature": "0x5c8eb8e5894bb0f1c79cb4c5cce62f3081765d3da12852420ff3c1e02e89d27f7d5463855837c92020de83cf7a167705e862898c290a2e0057af2bb99e7560b61c",
    "signer": "0x14d7618B82Da4e7176FDe32e4379943eCd69798D",
    "userId": "238125623"
  }
}