{
  "manageEntity": {
    "action": "Save",
    "entityId": "1006160",
    "entityType": "Track",
    "nonce": "0x66d01f11f204c8fc16de9d919f7642ac56cdb42ffba7a9cc089ccaa8376c8ed9",
    "signature": "0x51eacadeee135ceda3235bb1ba48c57016261effffebf99aeb73e93e3efe8b0132e223b902affa631bca4a6643768c58046ab6e00744a4183dc59682cd394c451c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}