{
  "manageEntity": {
    "action": "Save",
    "entityId": "1084600",
    "entityType": "Track",
    "nonce": "0x61476a8aeeb4718323e8fe98865acb72b429fc3fd0e580c00cf251a610d45dca",
    "signature": "0x4ef133e324e2550997389e133343e6bdde31646cc858e786a84dd36294faa43b587f2e72877a5a5f9de549fdddd65fc1fe36ff1a2d7863c758db9db20994bb9b1c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}