{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086919",
    "entityType": "Track",
    "nonce": "0xe8820544a94bcf1b4f51db2df64d6065215e11818de775bc460d2cbd99447aa1",
    "signature": "0x75e9f1a068d5bdae654189adb952bb0db515a85f61fd2340ef84498262ed48fd16fdbd0433e5af39ef328ab95f06d9a3d074f0d954ff9aad5706a850f3aeeef11b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}