{
  "manageEntity": {
    "action": "Save",
    "entityId": "356079428",
    "entityType": "Track",
    "nonce": "0xfef0213cb76ca79c60ed30948ff89b338502549cc598bec29815015ab1efcf30",
    "signature": "0xef182934351d1053a184a43efd7f2e64430e7b13fd1c797071bdd35a53ab99387006a13702fdbec1849e5db75ccb56880a2e934b94bc7083e882eeae0022aac71c",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}