{
  "manageEntity": {
    "action": "Save",
    "entityId": "142661",
    "entityType": "Track",
    "nonce": "0x7b2f25444d88b94ad4b6d459c7db54bf64bdcf25b52a9edea3801019dbdddbbd",
    "signature": "0x017c59541fe89333b72a6842a01d652604cc8e47e87754a7820f6dde09e04d9c0a8daea28fddd7e39922ce71effe12b69ac6d1a10f4fbe229f43b2aa60e687c21c",
    "signer": "0x06F989586c5477333A41f6057f224Df79903862a",
    "userId": "24240642"
  }
}