{
  "manageEntity": {
    "action": "Save",
    "entityId": "331130934",
    "entityType": "Track",
    "nonce": "0xa234f4b83620df1ed4c6b5878d927f84aece7e675547ad85256267e6f7f95115",
    "signature": "0x5271f4ee674cc484a051646b21eb97e850226f67fc2ffe8373203ba63dc85c7b7ec59d449b1e5e6c760d51ce7b826ea70314e4d5dd796d120883bf7fc2cbe5481c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}