{
  "manageEntity": {
    "action": "Save",
    "entityId": "1852205167",
    "entityType": "Track",
    "nonce": "0x01b1c84e6c3d077b2f7a2870b8a92565694b8370612a675ec946ae54aa464956",
    "signature": "0x3aa498d3144ed812aea63c10b06b3062f4786da75db64a762783e8daad15cf013dd8306df318846c96c53f07413d6c899f611672819bd7d75b4b21d7596ace331c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}