{
  "manageEntity": {
    "action": "Save",
    "entityId": "2136010739",
    "entityType": "Track",
    "nonce": "0x4d8d60283d0c8e075469d1feca06cdecbdd9fece65b405d663c53de114adc8f6",
    "signature": "0x857b677f752727864d3e23bc1a9835570c69783ac7252557f3e17f2a567c417a4f406b00551b0afe999f67c86b58e833b93bd81bc55449ebe9a30aab5698999d1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}