{
  "manageEntity": {
    "action": "Save",
    "entityId": "1767172159",
    "entityType": "Track",
    "nonce": "0x559a5a236f27b53cb8256c981a461f2792217c4d461db115be6b0cfb97e3011c",
    "signature": "0xb6f2f655bebfc275ed1f3540b252a3882975b3de2fd4dccc68154190c9c26ec33c7d750545e29a3665bfcfdb23ecf1e43036a7d7f81ea7165d819f85bbc85b391b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}