{
  "manageEntity": {
    "action": "Save",
    "entityId": "357694998",
    "entityType": "Track",
    "nonce": "0xcf4d9c0194dc7f0c79cb05258d4b227ac728530582c1eda5fd033e4073c5bb19",
    "signature": "0x85a8dcd3f681fc95347a6cc457281363f7ec24f76a25494a3d2ab92a05f14fed2f2b66e48a7d073e1f043dafb6c6db1042380f0449e639a56ac5e996959defce1c",
    "signer": "0x4089d1751487aA665C895419F2578a6Cf33BE481",
    "userId": "728155533"
  }
}