{
  "manageEntity": {
    "action": "Save",
    "entityId": "1927452257",
    "entityType": "Track",
    "nonce": "0x1c29e37cf824f1d3889134102280ab65c4511efa451e55847c6f366de69ed927",
    "signature": "0xbdd132b09368352b0dd42c7ecf9ac4181989c1bf8de06b93649180738f9fb3ff4e7a01648f5e255192cdec6cc0abc6157d3133c13e5a5f60d02f7716ab2612391c",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}