{
  "manageEntity": {
    "action": "Save",
    "entityId": "303233680",
    "entityType": "Track",
    "nonce": "0x1156cda7aa378ffb015e6b9c49ed46fd8a6b3230cb608ff584784a3e5431d0e3",
    "signature": "0x19521cead2242bf4f70308e7c0f223b0a72c81598c24052b18daa65cccba2a4f5512a4c1f83dc26e88090cc2aea4604d3f7b763dd9901d131889305db1ae712a1b",
    "signer": "0x5d8091c5439F52184dFD827f33FF815dCc827bA8",
    "userId": "52403052"
  }
}