{
  "manageEntity": {
    "action": "Save",
    "entityId": "1231277835",
    "entityType": "Track",
    "nonce": "0xcf97a3907595b1d6ccf42da34c7cd869fc1e06d5d1051e94aa1b7007e200d006",
    "signature": "0x3035c1f8dbb5e53b1a894577edc3948e78342feec268a99d3e0e3c2ca67048720172bc348ef158c1394495466d087801b977a6363ac82a88ce4be65ff764250c1c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}