{
  "manageEntity": {
    "action": "Save",
    "entityId": "632005",
    "entityType": "Track",
    "nonce": "0xa99646dd495542ff085e08fc05ae1114ef66defde1e06c2ece53bd8f4a1a4117",
    "signature": "0x474e88b67a7bc5e15ab2304f53c59c1725e12a6d428bdc8d4e278632216d2fcd133627a4084de401ffda3b6aea0e068d923674df46e14404f30c48165d0ae05a1c",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}