{
  "manageEntity": {
    "action": "Save",
    "entityId": "2079050338",
    "entityType": "Track",
    "nonce": "0xdf03eb5525b4521f12c5815179cacdd9f9d0652373cddb7b340917c8d64832c5",
    "signature": "0xa78cbfa5c149806d73af78416c8d7e9a747ae79809d0812f41b9acd7add6a7687379e0a3b53fb9ded86084761a028436bc639ef4dded437f0d62e1437d454d711c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}