{
  "manageEntity": {
    "action": "Save",
    "entityId": "1826135152",
    "entityType": "Track",
    "nonce": "0x8f354dbffe8fa27430910ec73116a6d41ee3261a541b8cee7151a70118d2dfc6",
    "signature": "0x9965a47c100847d48c8518527cae5397e135276cfb4662dba9d686ac1c1894147e15e19035d3a2e22962ce1c5f5a4989fb4ef03da8e9d8ed4ac5383dc3fb90ba1b",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}