{
  "manageEntity": {
    "action": "Save",
    "entityId": "998958",
    "entityType": "Track",
    "nonce": "0xf393adaf7ff9e9e20df461782b5853a34be23709d9b1677573062c54a9a60af5",
    "signature": "0x0ad191827c03cb6e8996ebc2a44b78356f7597906834a1e2ded2a56e53d6b00378c63e081acddf4c50fb86992edd2720664481900e3d4bf98003472eb09f3f6a1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}