{
  "manageEntity": {
    "action": "Save",
    "entityId": "734103063",
    "entityType": "Track",
    "nonce": "0xa3fc29dc8ecc87c76e8d0d895873152b1eb7c92a06aa3bca8dd2125614791dcf",
    "signature": "0x76ec7c8ff226b476aad172e3bb6853ec8051b6f2d2ada570805dc10bddfdf545046791b5b44164b129436a53b8d77f584f7c8f442de207238b9497d7cfc324001c",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}