{
  "manageEntity": {
    "action": "Save",
    "entityId": "2057954466",
    "entityType": "Track",
    "nonce": "0x6910a9937b61786a269ac2a28e913d9bd3dd324531d8f6c2e0040c61fe21bec5",
    "signature": "0x683386bf3e4df305fe5aaba7e5a32bc460c8c278faf77dcf1cd1c05a2e6124904969bcaedc7df2f34a77a472cf70a0c8c2eecbb5c0ce04e613ea5643463ad07d1b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}