{
  "manageEntity": {
    "action": "Save",
    "entityId": "716302",
    "entityType": "Track",
    "nonce": "0xd689559cf45d78bfdb2b5976d0d0d5fa2d734c34888d1cf7435c3b04c53b9cfe",
    "signature": "0x7f24d3b769ea1d6604ad1ef262e6e68f93b3285c934e3f96442b0a88be0a775f1e46a577b1a2b2618cbdb0582fa53a301d0b6ce66695bf18d72b12881c821dbc1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}