{
  "manageEntity": {
    "action": "Save",
    "entityId": "1532824399",
    "entityType": "Track",
    "nonce": "0xea8d7bf232a959986118073c0fc71d9ef37d707922fa3e5ebb5c5b304ce9a917",
    "signature": "0xd6667d2fcbbc49e2c2da86e6e08ae04a748510d9f0ae7195e0550e8fc2413df771db3d6110c1d8137da663e7f8f6d23ca5bd5c342aca4e74ec7b6ed9eafb0e551c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}