{
  "manageEntity": {
    "action": "Save",
    "entityId": "2012526327",
    "entityType": "Track",
    "nonce": "0x4e2fcc5685c4cd7c94c469af245b95e60eaa361c381691099387cdeacc9557fb",
    "signature": "0x632e706abd59575bd15634e81f68742f2cf23eff6af638e1a1a7377a21cdf1ad2c18da73cf56b6920382942f8d06287c2ada610ff562597606aef0f4a61362d01c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}