{
  "manageEntity": {
    "action": "Save",
    "entityId": "1792503008",
    "entityType": "Track",
    "nonce": "0xebcfd61e1467471e23a3ee7de6a8bb573da0d3bd0137b8bd8ddf3f49b42f961d",
    "signature": "0x12e75c88be21d36d6f9a2c498568e70712b5b02139aa1f899a20904ca6594e55464826f9e6f0ccd1515031534b40ee943415fc43b7fa9cca08156e25e96bab991b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}