{
  "manageEntity": {
    "action": "Save",
    "entityId": "1050689601",
    "entityType": "Track",
    "nonce": "0x4f5836e307bf3af233cec3693d79925e34e995e1ea2c138ac1d4ed138de60f3e",
    "signature": "0xec3465d494fbd740727247eb91f315c80ea5acda84ab7edeb14915562442c7145834332f4fbf120196cd1c3f6b1ab3e3464153d8dbaed10754aa351a23844be01b",
    "signer": "0xA66d5981794A5e084FBD9adBFF28F465924fb9a9",
    "userId": "980224167"
  }
}