{
  "manageEntity": {
    "action": "Save",
    "entityId": "2084604049",
    "entityType": "Track",
    "nonce": "0x0bcd30d742cd7d4df7f91d0dcca6fabe374cef689d9d640c99f89cb5cdb3885c",
    "signature": "0xf1ee4f1d435e855153a51af3b89963c0f4e87c0cb68380b6ddd879c1b139794035387d10aa256ebcbb50f6e92870e6b94e6fa360c6f2b440ffb8c3ce2e6bba771b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}