{
  "manageEntity": {
    "action": "Save",
    "entityId": "1676991482",
    "entityType": "Track",
    "nonce": "0x80e18b404744e5bf00b3d46b4275d8dd79571a148d1b2902dabe4d4395cdb0fe",
    "signature": "0x9cb1a1f155fd5dcacc4f9eac466d97ae26155c960f9402b6fea9fed355a76bb77d3ec0e0ee47affa214789cd2500163076a9c7d1968638904d9ec839104a5ed41c",
    "signer": "0x5fa60F185681545769de01098bB8F29cfbaE3cF0",
    "userId": "489026160"
  }
}