{
  "manageEntity": {
    "action": "Save",
    "entityId": "1847287116",
    "entityType": "Track",
    "nonce": "0xf3ad3bd91235cffe9f092498b8322d410b47cd2878bed7cfe29e94a0fb463818",
    "signature": "0xb807c72438a2e774ac04288b26f04549faed3a22652fb40d617e3039788c4532207c3ef0bc55afbf48e1fd9cd150307f69d9fff74e15332ea372416791dd5db21b",
    "signer": "0x9765cbE8e26a2c6c4847C1B69ABeB0B5250EC254",
    "userId": "678556080"
  }
}