{
  "manageEntity": {
    "action": "Save",
    "entityId": "1130075226",
    "entityType": "Track",
    "nonce": "0x5541099ddfeafb2aef7c1b6122648d263e56e5aff1ab6f6401a63b416b524764",
    "signature": "0xa9ac1d8e6228aa8a50ce95ea8887ed5a5be2ef415050c4cea689132ed5e055186f339fff7b2e65869b5ccf63dc6e4d40c8a3761caf22efc2711de1ad4e2299dd1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}