{
  "manageEntity": {
    "action": "Save",
    "entityId": "2095607609",
    "entityType": "Track",
    "nonce": "0xca4cd2ec741480c62a266cbaf0753ebe978293b98e53d835be7172ac1ad375fa",
    "signature": "0x71dbe9f2c8a9d2924770e241f73bfce82a6cede676dbad21596cfb9a05c38418363b12884f0634c72e855af8666181a48182b89fa2d2f040419db22b321138d61c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}