{
"manageEntity": {
"action": "Save",
"entityId": "352125354",
"entityType": "Track",
"nonce": "0xae652c1d3c2587a931673ea0d4cfc97b0b6eafb4d518c58ac7fabfe4c1b1346d",
"signature": "0xb2d9ba0633f0d1e4348961c607468ef72cbe42146e3a16c82cb74958f483a939153c2475653efa38dc4f95e71dabf9760a8fb730e13160b832e198b534dbee981c",
"signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
"userId": "77551267"
}
}