{
  "manageEntity": {
    "action": "Save",
    "entityId": "70791",
    "entityType": "Track",
    "nonce": "0xaa656b4c5ba415ffebb1907cd76b981c15b4ef7c8315806e14fa8d7e6a1d23f3",
    "signature": "0xe902db466891fb71a0e0babbbc4f9f1d5f06b34bba94f9ce9fc43e195f195ea2072d411ddb60316da550133f47bc18561cfb7466ad36affece85aa627eddb4001b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}