{
  "manageEntity": {
    "action": "Save",
    "entityId": "34619141",
    "entityType": "Track",
    "nonce": "0x79c624a9f35f228faf857428017c0a98619bbbd104d2c751cb2c8a4583e21cc0",
    "signature": "0x0e26b5ab6bc93950f416d108d29870e78286746e2c80a7eb3f5223ebfb0ce7ce7bd9133253bf07eff1186cf4652d74dbaf942cb95aba11bfbb398f4b3c063e261b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}