{
  "manageEntity": {
    "action": "Save",
    "entityId": "2062822229",
    "entityType": "Track",
    "nonce": "0xd18355251926756040717db2aadab65eff8370ab88444ad6b48a8919541c7b81",
    "signature": "0x9e11d68e70dcf4da73c9ad9d5e05c6fda633c19880baf9c19fdc8d4c7a5a5de6666fdd43b0ea1fba02db2e4eba8e228d7813611c1de93f9909991716eec7c5ed1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}