{
  "manageEntity": {
    "action": "Save",
    "entityId": "1034474609",
    "entityType": "Track",
    "nonce": "0x69bef0317192af348e3f96a24cf51f1a8298ba9c22c72efabf9790c0f7398772",
    "signature": "0x45e8a9311b52cae0a79c611e0e046e804c8ee14969738c7911ac05b4ca0eb8fd66a3ce0f5831c53e850d58c9bec6109baffaebabbd13c1f8f64ef10996f292cd1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}