{
  "manageEntity": {
    "action": "Save",
    "entityId": "1035296910",
    "entityType": "Track",
    "nonce": "0x346d4bc143f20f89ff25b574b7cae874332b20b91e76f83087525ec82c169779",
    "signature": "0x75efddca5f049e0980dce7b2f000de1972e689da5221541b9fbf669bf00301ab4040b062db50828743bedf87d6101102a74dbfea0d8b9edd394bee4dd658ca3b1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}