{
  "manageEntity": {
    "action": "Save",
    "entityId": "1733706535",
    "entityType": "Track",
    "nonce": "0x3eca8331ad62be3e013ad66eab570d94fa431fc45f697b1257e2462555d96ef0",
    "signature": "0x698a6eb8d1f667245fc8f8e758d0e4389e43871efac8472335ef4e1d61eaf5e4056c2eb8a7417c3268a4a4f0c6dfe5fc0d8c959b1dbafdada95fda41c8182b131b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}