{
  "manageEntity": {
    "action": "Save",
    "entityId": "292529",
    "entityType": "Track",
    "nonce": "0xcdeaa2c07f895879a378483ed2eebffafb993b06ad8b7adf232933d439e9acce",
    "signature": "0x73dc4b2077f97af05510e13d0a9f0267d358bdbd5cd167d84432c4668ea5f4357b00b26653900191b4bab185f86cfe543adff8adbef365e2adc904f38ced28151b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}