{
  "manageEntity": {
    "action": "Save",
    "entityId": "1167142959",
    "entityType": "Track",
    "nonce": "0xd14023ac6d925bce39ecd5b557c802e44000335638712878f345b013a56152b9",
    "signature": "0x754b8a639356adfa531da0b7752863725102f305723b38d2abb150a0c38cf76c42da1d362327d01a1e498660471017da9f4568d277934607f6dab3587c5a76da1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}