{
  "manageEntity": {
    "action": "Save",
    "entityId": "276233231",
    "entityType": "Track",
    "nonce": "0xc1a61d554d59d94236a6249eb31a32ada44f5dcadd904c26f1fde8df726e87cb",
    "signature": "0x5768f4c6586b3575b8f9809f0820bb582cfbfb5fb9cd811ee7168a45bb1473410bd60030bc2c3612f0959d9acac08db8418573760bf7302d9c594c6a49f0407b1b",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}