{
  "manageEntity": {
    "action": "Save",
    "entityId": "1075694",
    "entityType": "Track",
    "nonce": "0x268c1090387f66ae477de9771d603561dc5a253116ec2f7668b2f86d6d601bc1",
    "signature": "0xb65b0119cf1c284c7b3a07f92ee1334ffbb58070e48d8e152415f3940ca2e9e871e7a37468f656ac860351676fd5d3b8136af5d3b73c49365d2f977f543b12471b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}