{
  "manageEntity": {
    "action": "Save",
    "entityId": "1270067727",
    "entityType": "Track",
    "nonce": "0x6eaa3f1c0d9982426d4d275b71d98681ba6195748fa5b8855fe35da99514482f",
    "signature": "0x11f5811d067a9a379bbac2c0ddab468f1f01c0709377e0a326ab33cfbbc578635265102b94dc687a077d404fb4990b54e1303171e2066fae11b7da26cd26a8a21b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}