{
  "manageEntity": {
    "action": "Save",
    "entityId": "1020292",
    "entityType": "Track",
    "nonce": "0x4c7ec9c31c7dee2db340c9213f9f00d5a3bf18023cd02b48ac6aba4a33b9b4d6",
    "signature": "0xceab4b41fea713c8ed854c7370c22a7e1153a22972da8c84efce28ad3a3719872eb08a92c1aba543b6b1c0e294a4a311a34bad336ad0591e7051acd9f614da161c",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}