{
  "manageEntity": {
    "action": "Save",
    "entityId": "1928285955",
    "entityType": "Track",
    "nonce": "0xa1a14ec3e7da56ac1498e73a1efe5737de31bd4ffd25c1e352dca0cca4fe66e6",
    "signature": "0x9c7e8a1a2fcdf6b3723c73957ab46ba44fa7cb4a804ffebc6934267bd58b651651b51ee55f1d9dbd2661a0ec5784f620d66ca002d5573aa871a8d10c26b76d381b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}