{
  "manageEntity": {
    "action": "Save",
    "entityId": "2118475501",
    "entityType": "Track",
    "nonce": "0xf70480d035bf595f951e58d164d7aa2e9d1b133449ebdb817463b0bb639db5dd",
    "signature": "0x1a77f9badd98e9708458c61ec99d6906985b3713bde7ab0911888a605a4a9ec353e4fcada5e97f4fbb96bca9fc65289aa35dd022b4a7e9e5e85c5c6a36d1952f1b",
    "signer": "0x96F25BA81df0482778A947af84C03800CF5f5d64",
    "userId": "993166642"
  }
}