{
  "manageEntity": {
    "action": "Save",
    "entityId": "1070889930",
    "entityType": "Track",
    "nonce": "0xa05e96368b9c5a1fdddac2c2d4ec6aca56230b2b3b69d9a46ac1487da9062321",
    "signature": "0x42a71c6e09dbb711e65aa0118880d21b70dd7b772e10472b7d03d0da136b2b395bde61e8cae912599734942b7466dc7c246566ea9d8235d86f6a137aeaee430f1b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}