{
  "manageEntity": {
    "action": "Save",
    "entityId": "229846559",
    "entityType": "Track",
    "nonce": "0xe729bfd23beff44d3715c5d0b68e0e927706f2538cdf31d02f7b82718e3dbee0",
    "signature": "0xba6cd9ecd5af870d95310d21e88d82ae7ed10397e4a3100404787176d3547e0e16c6e3891a374c8def90e889ba54a519b8037e849b3d33428a62b5350eb07be11c",
    "signer": "0x63EbE5a1B5C5F156330BDf810f5fFf6A224c75c8",
    "userId": "309080"
  }
}