{
  "manageEntity": {
    "action": "Save",
    "entityId": "560417958",
    "entityType": "Track",
    "nonce": "0x132f1ef06cdf2914ae1199f52cfa31e2f56c0cc8833812b6c61bf0a41038b861",
    "signature": "0xfe3214f3e93f37ea02eed1a763dacc3c858be6964d699425015a70918a5fe9fe5b9117f48423abccea2fd1f1f273c688b7b61257928b71607dab1826dd58bdb21b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}