{
  "manageEntity": {
    "action": "Save",
    "entityId": "1043546",
    "entityType": "Track",
    "nonce": "0xfb69d2ec8f79e1de0051cbadd7d6ca4b3d9376195ed93d7e5693cd0b4d84989d",
    "signature": "0xefa1abd356ce234e8f118fe5ca06a5beff7341992c40b303dacfeb2ee5654ef00c3fb38cf0909224101ad6e4de04d1de0b48d8b220cd9d68b7c9bc4bebaaee671c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}