{
  "manageEntity": {
    "action": "Save",
    "entityId": "1036246277",
    "entityType": "Track",
    "nonce": "0x7fc63b6013de7e4e41da5821ad94daa0375522c6daa8fe3f2ac660df661e2ba5",
    "signature": "0xf91f9a670b203c70afad8be71008649d55576fcb41f2385a6c59b4c626cfbe2c28f4655ac54e6ca83d8ca2715ec1f912c74bb6f11d085d0a91ccc5bcf47755c61c",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}