{
  "manageEntity": {
    "action": "Save",
    "entityId": "1409679326",
    "entityType": "Track",
    "nonce": "0x034ae97a3ff92f624d1f7d6badd3a1baf4b74b48c3930ff89058bffcc45556ef",
    "signature": "0xb76306f722b7384f57f955dc5e81b9d03a708310fee2b2099510d260f1a491542c3588195074ef7dda039d83fc4e0f01667a6a23acb87b7b4d3da00fb5d42e6a1c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}