{
  "manageEntity": {
    "action": "Save",
    "entityId": "1076545833",
    "entityType": "Track",
    "nonce": "0x28b67eb0670a1131ab4d2be9fab89eb606a8c8ebb7ee2c1fcc6a774e26f21c3f",
    "signature": "0x6f88a068cbb5868cd8bb21976709de32eb4ad0af84ba0cff576d40e206ab23fe2471d1b22037ddc3855944e66937cfff12c6aeb1b5aa28b327d90ec2e45d79851b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}