{
  "manageEntity": {
    "action": "Save",
    "entityId": "1781525383",
    "entityType": "Track",
    "nonce": "0x86d2feda26caca68d7cfdaa71833f3acf05900445cbe8d9ba4baa3f1cce0cadd",
    "signature": "0xb2edf27a090f52be1ce49ec044b68b383bf21b5a971356f7350eeca39f70a5d9361f35dc11275794f6a5ce57b31903b93671d8c6e1a5ed926e66e0113beb18441c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}