{
  "manageEntity": {
    "action": "Save",
    "entityId": "1093111",
    "entityType": "Track",
    "nonce": "0x460febd918c38d939e0ed4240c24f36ea0730a6d719fef046ed7608c99663e38",
    "signature": "0xb08f87db01c8cf97e57ab12673407ec303dfabfd9e6ab403086393fdf9b812b50d62b66b3f4ac22cf42e346eb277e90e405e3f92792a17e2cf64c1a81421d2c41b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}