{
  "manageEntity": {
    "action": "Save",
    "entityId": "860958575",
    "entityType": "Track",
    "nonce": "0x4d7aa6453155c34d9c33c65ae81d4a6b332e24d57c3b682716f3e07fbc0d3076",
    "signature": "0x7a239179006e3027c90cf87d489ee53b5af287ece8b3b2e0133793f315c231373929ead83a5decd7d1eac28a6f415e5bafc0482abcfd8696a50868f1dc3332861c",
    "signer": "0x2ACda02e37Db2DC08f82aEFAB268F0610974bb3c",
    "userId": "416239376"
  }
}