{
  "manageEntity": {
    "action": "Save",
    "entityId": "1766892114",
    "entityType": "Track",
    "nonce": "0x7927b0ed06957a1f7b3ded9d9c49ee51cec9d701999bd12172011ab59eeb0ef1",
    "signature": "0x76c89d723435df5c08aa52790c80f0610e09f78fa9262710a39926ee6c989d8329e069db9a5bd3f4b585eeec5fef704665be3abe953a3d659946bfdc43d7f0141b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}