{
  "manageEntity": {
    "action": "Save",
    "entityId": "2030785180",
    "entityType": "Track",
    "nonce": "0xf6d8f885ab4dc017e92cac3fb1a970bb9d9ce91bac29707af9e87df6705f845b",
    "signature": "0x4411040e8fb046b9948f178462231f89e311e78a4f494e9016f1231d7f5bf7f24d735a8281253a2f987a276fa713d06eeb839433aa99ec1f49c33f50f83535611b",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}