{
"manageEntity": {
"action": "Save",
"entityId": "604234052",
"entityType": "Track",
"nonce": "0xf2a01f8675f7b2bbf2470b887329cd84727fab37236fbc41e075b7df17c158ea",
"signature": "0x8d8799918392c99a3a2c153bdbe361b017c0d21ae24a8071d015a53ddf1b84d16705bf0c2cf348f0c84f2ae77198f9a2aa9d38d078621d04ffa4268c617defa01c",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}