{
  "manageEntity": {
    "action": "Save",
    "entityId": "86510363",
    "entityType": "Track",
    "nonce": "0x6cf3c2ab119208768516bae6b794c9db1a2c32454c69f6fe9030db058e7797f1",
    "signature": "0xf2331aa085ce1d1a124e70f1fb9d91aa0dfab97c2fce4bf7542adfa1fcc5dab11296ffe4b7a6aa87a04e8a76f85f8d5e1c4036ebe39074edddbd4a6fdaf2541f1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}