{
  "manageEntity": {
    "action": "Save",
    "entityId": "335092965",
    "entityType": "Track",
    "nonce": "0xad93a4c3dda1ac3a91af51023ea689fbe64944f00ce1ed45426b7501bfd45829",
    "signature": "0x15604ba98c210a4f510d66b308ca21c29753a4f6cb174455cbc235c060cc52362a98086eb439fe6f22ec808be542e56fc8dde388a07f1534ab4cc2ff20fc30701b",
    "signer": "0x9881bA04eA95d8a4De5594aBC9DBd5c96F38eF34",
    "userId": "211307"
  }
}