{
  "manageEntity": {
    "action": "Save",
    "entityId": "183592415",
    "entityType": "Track",
    "nonce": "0x2448248be0d85447764986d184f9795ebc55462ab2c97d5a925c51ff00836f99",
    "signature": "0x553c2b95694b90a9ec5f5025aafba746cf3b812ef42abc1ac9e44d7aa5e9fb34600965a0af24179295a21d7c60fc6240d8e3104eaea39e283f75a2193a2cde7d1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}