{
  "manageEntity": {
    "action": "Save",
    "entityId": "1094382174",
    "entityType": "Track",
    "nonce": "0x8df999a1dd62ed06d0a3cb4d13ba6dac0bc520b124c22fb464df4d3f05658697",
    "signature": "0x478b67bad29f6c9f056ea041995c52c7e88f77d747f68b6ef16889ded17f2f8f3b9cfdbc2c52b637a48b6dbb1f124d3adf30e6fc4dbe55a1028b2a7e1dda4ccb1b",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}