{
  "manageEntity": {
    "action": "Save",
    "entityId": "1309316086",
    "entityType": "Track",
    "nonce": "0xe2d182b1ac59e6034df1e44d76c124c502e58bfc0d6a96358795c4e0753e1554",
    "signature": "0x19a636f8bf2a098c23dda279ba9508987f63b22452a89dcd279b95bc742d60ee55055c62b3fc2eb13f76b7b92e096aa164d8bcaa93f818878b1dadea1657a7bc1b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}