{
  "manageEntity": {
    "action": "Save",
    "entityId": "226848",
    "entityType": "Track",
    "nonce": "0x2347d5ab23a57df62babca0ad5149262c38fb58858a86f82162ee86fc519745b",
    "signature": "0x80535fd688763f927a3d87ce3f5c9544e0d5659bd7a826442f9cd7732db69f423d4485682c4c148542d31ccc2ccb8d4f05e039579689e5dce5024e5a738b84a41b",
    "signer": "0x40aE1C539711FBaE3930131b028D9c764fD8EaCb",
    "userId": "35251"
  }
}