{
"manageEntity": {
"action": "Save",
"entityId": "925446057",
"entityType": "Track",
"nonce": "0x8d9fa523f18d8376edf5b35fb92f1977a44b096b282a5ff646c23c67ee8c4931",
"signature": "0x2d4a80f16f79f87d09f2de27177ef2a1749d43316e446d6912e28e63156dc4bf1059b8cc486f586c6d9283b699b3c7a7a42cb577018ffc1c43878eed0e2691701c",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}