{
"manageEntity": {
"action": "Save",
"entityId": "547667974",
"entityType": "Track",
"nonce": "0x8c1354c3cd06d9fdcf525c6085496a701a960742a1dc3272e9f0cd1caca291a3",
"signature": "0xc71b156a93fd656386d31b0f7fd6a9f74849eeaf4e6cbf4e663378eea4ea0cd81736db68834982febaefeb0c8814d85fcdb8509c47a23aa7e9cb864aa656992f1c",
"signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
"userId": "486490947"
}
}