{
  "manageEntity": {
    "action": "Save",
    "entityId": "227211624",
    "entityType": "Track",
    "nonce": "0x6f49c078f669dcd001dc1814ba21919f540917791af4bd42077bd104d67ac4bc",
    "signature": "0xde35dc5c9035fbbc36644930fc2501b0bc11c42ea6d8cb653c9643c065dcc2e37023582bb04c2095a059416c2c5db070af0de072a8b14f98bdb5dafc09a07c851b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}