{
  "manageEntity": {
    "action": "Save",
    "entityId": "435570168",
    "entityType": "Track",
    "nonce": "0xc378f1878c19f0c26cca73f7c0fa6b0dafbfc791818554ab1a0fd11eff16e048",
    "signature": "0x46a7b05891892265055722ebad8b1ac2bb7cfe8145c5cf9745919c462566b4d9081a89061a5a2dc9a4514f41824e650a60853efd3abcdcdaedc56e6a22dec1961b",
    "signer": "0x79491f0dfbdF0b388e8441b4c0221bfaB43075d6",
    "userId": "963945097"
  }
}