{
  "manageEntity": {
    "action": "Save",
    "entityId": "200061048",
    "entityType": "Track",
    "nonce": "0xc6def9ad59338bc32c051e83042f26f86dd84fb071c3456a1f783d1d2f5981e4",
    "signature": "0x5c42d0b47951e5c7badb003e072e74d663a1aa9b7b7968a22e4e832ff6af4e0c7ad051fc48f0b6646f810b5a6e9d30c6902a307b88b1104d30870ecb0d9863461c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}