{
  "manageEntity": {
    "action": "Save",
    "entityId": "275978032",
    "entityType": "Track",
    "nonce": "0x38ceccff86606f81c00e53fc95fd150de576bbe01ca768660cb9f47de4d3f428",
    "signature": "0x97c2d79e9c7b33dcfcffca290dd1483066b0e3e538920af0a4efeb037491725b5fdb49ee1c995cceb36c9950aef47526429fa13e025c4adcee9f312aaccdb8b91c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}