{
  "manageEntity": {
    "action": "Save",
    "entityId": "1162778542",
    "entityType": "Track",
    "nonce": "0xc6ef44e8aeeed7f0a594bb8b097ab5e1d51119c6ef0e9bd14cbb2121ed55ef06",
    "signature": "0xdc881e5fdb5afbd4929713920194a77921b34f816799278c180e43611e97ed7113a035de17d337f429b6feb0123c1de89c988a5339c764b7902f769a4399d7661c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}