{
  "manageEntity": {
    "action": "Save",
    "entityId": "720054",
    "entityType": "Track",
    "nonce": "0xa0527cfeb56e8144f2c0fc6069fae0c838f0389bcb889b02b6861e9f2ef024c7",
    "signature": "0x512b6c9ec27504c3e0ea11333faa186b91b60bd96a7d8e2182656110c219d44f6dfa6d055865cf04dfa714ee35432a3103f3ab2fedfd57f9b70401ae2c31967b1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}