{
  "manageEntity": {
    "action": "Save",
    "entityId": "1056562392",
    "entityType": "Track",
    "nonce": "0xdf1f9fe1817b87e2faa0747a8930ded3bc79971676cdf21ea9ce511f16a91883",
    "signature": "0x2b62d1b203055254ca1d212d5a65b1f42d7a1d8ebccacdc434d39c103d20c9ef45055b875ff69409ecfb0b0585ee79fa14c3ebbfd90986ea81d05b15c3313f171b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}