{
  "manageEntity": {
    "action": "Save",
    "entityId": "53825887",
    "entityType": "Track",
    "nonce": "0x313b5ddcf9e53662dc586e8d53fef86e6fbd65fdb96d122472a0404f4999118b",
    "signature": "0x5fd164f945e089f57221d93439e7dbbd278e20d3849579d23bc195c2561f2cc117d205e90090c69166e1ba19b6a625719c1771eedc5742ef47cbe198f52b79511c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}