{
  "manageEntity": {
    "action": "Save",
    "entityId": "1055582",
    "entityType": "Track",
    "nonce": "0x4c7380b55a9e4482702b4356923c94e16c74a9a5212376ee733e6d1602414cfc",
    "signature": "0x2c0a08f4a5ceb558e902ac0f1bb125e943c3efe6a04330dfbc364324c158db746052244ff4bd9fe31c52807d2bb7010b559e5c621ac0d57dae5ea963323eb6241c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}