{
  "manageEntity": {
    "action": "Save",
    "entityId": "482256185",
    "entityType": "Track",
    "nonce": "0xb39dc6d262f33b54e6b868773177cf183d8d0489d5a0f537ac12a26a9765e515",
    "signature": "0xb015e4a3f73c0d2ec154ba0116c7b1d98193f2963cf7f51766b90b340657594b6e29a287a92a350c423016d9eb8437c2d4f90585e3d2a8c91e9c4865263ad5301c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}