{
  "manageEntity": {
    "action": "Save",
    "entityId": "95731219",
    "entityType": "Track",
    "nonce": "0x814c62123d17300eecd535f13b0dc442ecca23dd16299175296d01f36803e59a",
    "signature": "0xe344bc2632b5d5d68785053166a8d0051dc30faa0691a8c15f342f70b92a1da04f92752729a52c1602a43e9f968a0cf4e3c92a26393af4f1b8965bd77c2f9c7f1b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}