{
  "manageEntity": {
    "action": "Save",
    "entityId": "1126511289",
    "entityType": "Track",
    "nonce": "0x040e1090304edac91307e10b146f6e482a91789ea78ec546245df3ed406eadd5",
    "signature": "0x51e1f488a1f92bc1c4cedd593ca81d72a36c8af69d5965bb1590a18d24988cac1919fa9ae9fd04fb785c9dd2c55e0db320b8b13e3be7d3132a81b569fa48d3a31c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}