{
  "manageEntity": {
    "action": "Save",
    "entityId": "25351336",
    "entityType": "Track",
    "nonce": "0x8b67c96e834cc2a6bdeae8f02d6d7d6fe9a7c13b236c413e9e5f8161e2e34cf1",
    "signature": "0xa3bd433644dea545e0c3d5e8e1127c190062235d3ad1634063deb4ba2ea1c19d4a67822eeccf8c67fcad6bb54b0cd4e165dcfab7c477c410749f64806dd459701b",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}