{
  "manageEntity": {
    "action": "Save",
    "entityId": "532985275",
    "entityType": "Track",
    "nonce": "0x0024a2b603ccf184527d71187098a3c670cb2d4419ee0d26a361865ff6c8e20e",
    "signature": "0x505e2db5fe46ae39bcc598a35607c527b4196daf184fee85505f1aaca5c4c8a35b954f41501483f5e8bd7a045f0e29727b30d2de61f76c9a97371a0bbc40759e1c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}