{
  "manageEntity": {
    "action": "Save",
    "entityId": "1472252248",
    "entityType": "Track",
    "nonce": "0xb63ba7c6369f237fd8487dd16ca73dd967fe534d81903bb7e78ff70eceb6cd24",
    "signature": "0x071538c0af23c71b2cd3881060d67babe671942369b98e40170682872da249e94ecc7cf72b5309324fc089ecdaa6a720095a1482b53df27099933623952271241c",
    "signer": "0xD9254B079e0e1571E56512C57188F2eec899054f",
    "userId": "854498636"
  }
}