{
  "manageEntity": {
    "action": "Save",
    "entityId": "1362146646",
    "entityType": "Track",
    "nonce": "0x5188068fcfa84d50496fb3c850114b81415ba2cbc7bdcda15a47e4dd5e12855b",
    "signature": "0xd146942af36462eed1ab30d779ed21b55ad953b2b3636634dc87437a41f95d9a78bd0ae646763543480ea22dae00b842fd8ae9c2d526ab2c519b3a38308655e21c",
    "signer": "0x5abad058d33E1C0C0A69d85BA3181678C1721765",
    "userId": "632918751"
  }
}