{
  "manageEntity": {
    "action": "Save",
    "entityId": "1163607994",
    "entityType": "Track",
    "nonce": "0x8a2f138d5191f6beb1071e8ccd9b5ef889a0606447bb813c6657d989c0f97a28",
    "signature": "0x306d25d515496f745bf7ab4a8d38c004ba935205e1813f85852888c736ef56773470abad1b27caa4f471ac3374e029bff6e9b13983e870e75b62240e722b71f91b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}