{
  "manageEntity": {
    "action": "Save",
    "entityId": "1626285394",
    "entityType": "Track",
    "nonce": "0x11aa1967250a86258112728b35c134161d4a9128eb2079daa2713d4be083d13b",
    "signature": "0x683c6da4fc45827a0c5c9be74de3b42ec95dc12357676574e3e462d51489e1bd584c8db803c91ae22f92ca7b1aeb00be9ebc1a76a01066a39d819f0f70f158c91b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}