{
  "manageEntity": {
    "action": "Save",
    "entityId": "991656581",
    "entityType": "Track",
    "nonce": "0xd3be28ed73c18134f2f0628355947d4836863aa36da80982e99a251f16e0b84f",
    "signature": "0x2eaf7b2c853ba95d0ff978651c27667cc1a0df4352e11fe6cf30bc18a1ae0dc731e5bfad2b7e68c7ed7e97011985e12ebbddeb522f59216432c4238e64587de01b",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}