{
  "manageEntity": {
    "action": "Save",
    "entityId": "95401664",
    "entityType": "Track",
    "nonce": "0xdd7e9333b08456d587430911c1431fc4b23d6860cea493f21e835c6fadd43f62",
    "signature": "0x1c5761ae719ad2d0220d93eeac186ce9dd1e1f64eec5523d4b6c969fc1b072e8506348dd4e69f43d93865d3a0f633c7f7fde2705ac0bc33f83049b80dd0ca5ff1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}