{
  "manageEntity": {
    "action": "Unsave",
    "entityId": "1816631307",
    "entityType": "Track",
    "nonce": "0xa7188f79e1f905973e34e0d037facfeeff961b3f3bcfe623dd076f46238e7ce9",
    "signature": "0x1b3e686f738e62854a85e543fb765bb6e44c5c9ec575e620b96d402c92cf9a0f7f558cb03e3e72571f923fcdecaf0f2182e9072c558be67f5b28ce761fd739291b",
    "signer": "0x550308aa4AcD9bEEC92e3A1c1a3b59B9E2d7f0F5",
    "userId": "232042"
  }
}