{
  "manageEntity": {
    "action": "Save",
    "entityId": "1538521096",
    "entityType": "Track",
    "nonce": "0xdca2dd7035cd2e8091316bd28d316fb408b89c5c0a3dc6701d24e35ac5c3ed6c",
    "signature": "0x0e2abbd2d569c3d00eacad3dae5f811cbfe1913bfd68dec06a4cf3f5cbed7d3926e098849b4bdb7a239c5efdec871ca7343c934cd93c9fd56af5d42fba1823b31b",
    "signer": "0x036B1ee0d2003ae5B5E252d58647d13f0e588EEB",
    "userId": "161353174"
  }
}