{
  "manageEntity": {
    "action": "Save",
    "entityId": "1086996741",
    "entityType": "Track",
    "nonce": "0x20d6c325d7b693e65781a2aa1de8994489ab02784a61e4270e8278fc95b5a2a4",
    "signature": "0xdd38cfc6f003235d30d0a324843beb9b6725fca6b381737c5032495f16afb6504b9d41ae4ebfc7632c61e5409e52d134561d966a0ac012b75ccdd74cee47b8bc1b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}