{
  "manageEntity": {
    "action": "Save",
    "entityId": "565063064",
    "entityType": "Track",
    "nonce": "0x0524edbe743362b2d3c0a2f4be215e5869e8225d27ca2399564b5e96e19a0943",
    "signature": "0x9db31183fa78c4e0db7828d7010d1ba5defa3a3ab9194f4e477079c2afbfa5491750dd139cb5e7c8aadc2c3b29651fdab8dbb0ac2f1589be5aebad73dcdf429e1b",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}