{
  "manageEntity": {
    "action": "Save",
    "entityId": "262327263",
    "entityType": "Track",
    "nonce": "0xefe4cad834da0b6ee0248ed5390a8a9bde4f49d3dac79cf5b44aa44973afeb67",
    "signature": "0x7eb9654d3e3315aad4996516b7c1cf44760348f11b1a69b9cd23e6ee07091a606c11eae7c02f336b8de591bb5446e599856a5f8d560afffa19ef69e94f92939f1b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}