{
  "manageEntity": {
    "action": "Save",
    "entityId": "801380",
    "entityType": "Track",
    "nonce": "0x9c622760c28194933a9a387832331bddf60df6fad63d3a188ac6d2dca53af104",
    "signature": "0x49a44130f5356cba01c01aa428f1944cf57af72bc9c049ed7a326773fa6b647675dc852a9e89babeed4ab095ef5e7729b7127b8d8859c03c2febb29daf04d9561b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}