{
  "manageEntity": {
    "action": "Save",
    "entityId": "1594752434",
    "entityType": "Track",
    "nonce": "0xc2bf97f1235b48fd97ce1e782387bf77381fc087098430c6b9e31ba6fce9f8b2",
    "signature": "0x2d59c1cc1c28ed536f35de6a0b167949df1ad3d630d44e1a7946ffb2854e97e25b5798401ac61a48cef41ebae43d0edd97bb60b9148e8f9f4066185de5b08a1f1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}