{
  "manageEntity": {
    "action": "Save",
    "entityId": "85755171",
    "entityType": "Track",
    "nonce": "0xa1cd73ce6cb75df69f3eec16fe9fa83b2ee2fb125996ad4184530c704b41e334",
    "signature": "0x262d837134b2c0b8d66fcef977e45d9cf05f9dbf1ff0ac47d2d3319c614f46f078587f31f539437050278e6152df36290a7226d98a17c8b0a4b103f4fc26f69a1c",
    "signer": "0x27D63a4a6013A541f367C3A37Ec9990943De0A68",
    "userId": "66005"
  }
}