{
  "manageEntity": {
    "action": "Save",
    "entityId": "2070534410",
    "entityType": "Track",
    "nonce": "0x7f73c108dcc2d0ce06c6dd67fe832918508f591626195239d0e8e32a1ab3bedd",
    "signature": "0xfa3f71f93b68becb06589d792f967f74d3f5a00c796494b13da4006c71ec52ed7af82ae1415acd1153669cf01bfd7869c3caf71c0bae0118cb9c00d325c547a11c",
    "signer": "0x48a006fC89FEf065AAB7A5769519625870833CC6",
    "userId": "128172"
  }
}