{
  "manageEntity": {
    "action": "Save",
    "entityId": "1260625111",
    "entityType": "Track",
    "nonce": "0xf6dc5a037b2664f5d2913203217030e2335af990bfeeab98b86d938828bda419",
    "signature": "0x528dd6f95500e159c2337e645017c1a006d87470b559b23b958883db2f5934f549be595244d73cd49187e12603ab4c6dbc49bea17369350a73009886079a18141c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}