{
  "manageEntity": {
    "action": "Save",
    "entityId": "969186235",
    "entityType": "Track",
    "nonce": "0xe37f71cf7fdca7b486afb8fb1c7847b61ed0dc3b2ddeeb38c338eca45e6efbec",
    "signature": "0x869c3eca007e402d47857909c3671bd68902340930fb2d44a71044d5057106eb7e1d4ec442dd1333c9c4664b7c10a053bb812ecf7400b290183f21bc131b45b61c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}