{
  "manageEntity": {
    "action": "Save",
    "entityId": "1482428073",
    "entityType": "Track",
    "nonce": "0xb7ad3275103124fe5f75707dd2dce8f8796acf26e3964c400b379375a3e17150",
    "signature": "0x3b32c5015cd8d027edf661666db1ab95c43b9377a7437b706d5fc46bc33d5d00222f7f3f93c56a18a60c20113c71b573303c469cf01e4b9895eb85ee2b2716f71c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}