{
  "manageEntity": {
    "action": "Save",
    "entityId": "1431576099",
    "entityType": "Track",
    "nonce": "0x26a232665e34aa286097328e91f5230e01be6574d56997bac08a58a9baaf638c",
    "signature": "0x3eb3f50426a3d85b9fb968d2ab902efc28f61ae769633d0959993ec2a1386d4517299d633573bd66a07bd321db7b570f360a4034f31754221d0d838c4a2c80d41c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}