{
  "manageEntity": {
    "action": "Save",
    "entityId": "1576322547",
    "entityType": "Track",
    "nonce": "0xf0d27bbc8d73b36e1e21d5c8b5d3e5a5b745f4b363c8840b4427c44d427fd23c",
    "signature": "0x342a941c57bea4b317cc86773b8510e2b0f8e324e0e4104f1e9343d01c652c977243966241ebaa700be27d11251c6e2e9f35e6f61c01c811fafe74b96d4b007d1c",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}