{
  "manageEntity": {
    "action": "Save",
    "entityId": "1401202293",
    "entityType": "Track",
    "nonce": "0x61a82666b2608806b0d31bc2369874ad05e516d8cf2c5f9fb8727f868db9ec71",
    "signature": "0x2bb89fe74e3f411eb2b79df9905e0f87d9fbb91c7dbf446a29f5d1d708f7df523176541760c9e0a783179dc0ab1b8d666d42a67a21c91243b9631f4b274f08ac1c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}