{
  "manageEntity": {
    "action": "Save",
    "entityId": "1810359170",
    "entityType": "Track",
    "nonce": "0x94ea53c7e26a339f020b98f934b886ad1e529d14c1c685164988e788236ee84d",
    "signature": "0xb4d75c076733ef5cdf2606458d4e882ac7c580871ef2c028be4d38d21a958a0479b8bbae881c4a93c30c5081fded260f9e9ce1e7329d5e605855e840ccdc0bb31b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}